- Kate – “You know, if I'd known you were getting married, I would've come back sooner.”
- Sophie – “I didn't think weddings were your thing.”
- Kate – “Not to go. To stop it.”
Kate and Sophie meet when they both attend Point Rock Academy. They fall in love and sneak around at school, hooking up in/by a tool shed. In 2013, a week before their graduation, they are seen kissing and the academy forces them to sign a paper denying they're gay lest they be expelled. Kate is furious and leaves, but Sophie feels she doesn't have a choice and signs the papers. Sophie says maybe they should not be around each other anymore and Kate is heartbroken. She tells Sophie that she knows she cares and that she will only abandon their relationship if Sophie truly doesn't. Sophie tells her she doesn't and they're both devastated. Kate leaves Gotham to travel the world and train on her own. When Batman leaves Gotham in 2015, her father starts up Crows Security and Kate aims to be a part of it some day.
5 years after Kate left, she gets a call from her step-sister, Mary, who tells her that Sophie's been abducted. Kate returns to Gotham to find Sophie and stumbles upon her cousins secret. With the help of Luke Fox, the son of Batman's late tech specialist, Lucius Fox, Kate is able to identify the assailants and track Sophie down. Donning a modified Bat costume, Kate manages to save Sophie's life. After Kate saves her, Sophie comes back to the Crows. They meet again in the Crows Security building, where Kate finds out that Sophie's now married.
Sophie becomes suspicious that Kate could be the person wearing a Bat costume, the person who saved her. She also tells Kate, who denies it. After that, they go to a private place, where Kate asks Sophie a favor - if she could test Alice's DNA and check if Alice is Beth, her twin sister, who went missing years ago. Sophie declines and gives Alice's knife to Kate and their hands touch. Kate tells Sophie that if she knew Sophie were getting married, she would've come back sooner to stop the wedding. Soon afterwards they're both attacked by the unknown people and Sophie's first impulse is protecting Kate. After a fight between Kate and Sophie with those unknown people, Sophie also takes Kate's side while they're talking with Jacob Kane. Although they're exes it's evident how much Sophie cares about Kate after all these years, which she also tells Kate. Even so, Sophie reasserts that there's no "them" and that Kate needs to move on.
- “Five years of training was easier to walk away from than going to work with the girl who broke her heart”
- — Mary to Sophie
Sophie visibly regrets telling Kate that she needs to move on, but at the same time knows she did the right thing, given the situation. However, Sophie can help her curiosity about Kate's life. While serving as Mary's bodyguard, Sophie queries why Kate didn't join the Crows. Mary, at first, doesn't want to give a direct answer, but eventually tells Sophie that Kate isn't a Crow because she couldn't bear to work with Sophie. It turns out that Tyler, Sophie's husband, never knew that Sophie and Kate knew each other. When he asks Sophie why that is, she tries to avoid answering and lies to him. Sophie sees Reagan and Kate flirting and making plans after Batwoman saves the party guests. Sophie is clearly jealous and pained, which Mary sees, but doesn't do anything, especially given that she was the one who told Kate to move on.
- “I'm glad you came to me. I know things between us have been a little tense. But we always make a good team”
- — Sophie, to Kate
While on Magpie's trail, Kate comes to Sophie for help, to which Sophie agrees. They chat a bit afterwards and Sophie tells Kate that she's glad Kate came to her for help. When Kate's 'held captive' by Alice, Sophie decides to come to her rescue, along with Jacob Kane. She tracks down Kate's phone and drives with Jacob to the location. Later on, when Kate breaks free, she and Sophie team up against Alice.
While on a case as a Batwoman, Kate puts her body between bullets and Sophie. Sophie says 'thanks... Kate' before passing out, having been hit after all. Realising that Sophie still does believe that she's Batwoman, she brings Sophie to Mary's clinic to keep Sophie there, unable to reveal Batwoman's real identity. Sophie tells Mary, while Mary cares for Sophie, that it's the reason Batwoman is keeping her there and that Sophie wants to reveal Batwoman's identity to 'protect her'. When Sophie tries to sneak out of the clinic, Mary stops her. They have a little talk about Kate and Sophie's break-up and Mary tells Sophie that she should consider whether she wants to add another person (Batwoman) to the list of people she hurt (along with Kate), then provides her medicine and lets her leave. Sophie goes to Jacob Kane's office, presumably wanting to tell him that Kate's Batwoman, but when she arrives Kate is hugging her dad with tears in her eyes and Sophie leaves, seemingly changing her mind.
Knowing that Sophie might tell Jacob Kane that Kate is Batwoman, she decides to meet with Sophie and talk about it. Instead, they end up talking about their break-up. Sophie tells Kate that she had a conversation with Kate's dad, who convinced her that she should sign a paper denying she's gay. Because even if Kate and Sophie had stood up to Point Rock together, they'd both still be expelled and forgotten. That's why Sophie signed a paper and lied to Kate about her feelings for her. After their meeting in the restaurant, Sophie tells Tyler about her past romance with Kate, revealing for the first time that she's queer. Tyler asks her if her feelings for Kate are gone, but Sophie can't give him a definitive answer. When Batwoman's life is threatened, Sophie reveals to Jacob Kane that Kate is Batwoman. When searching the building to find the person who has the gun that can kill Batwoman, Sophie thinks back on their break-up.
- “Because Kate Kane doesn't waver”
- — Sophie standing up for Kate in 2013
In 2013, after rejecting Kate, Sophie saw an employee of Point Rock removing Kate's sharpshooter competition medal from display. Sophie stops him and tells him how Kate won it; that she didn't even try; that she had a tequila hangover from the night before, but still managed to be the best. Sophie tells him that Kate did more for the school than anyone and that he can erase her the physical evidence of her prowess, but never her or the effect she had on the people there. Sophie then took the medal from him and walked away. Batwoman and Sophie encounter each other and Sophie's surprised to find that it's not Kate in the suit, but Julia Pennyworth. Thinking at first it is Kate, Sophie her that if she could do it all over again, she would've left Point Rock with her. She says that she told Jacob Kane that Kate's Batwoman because she's going to get herself killed.
Sophie grabs Batwoman's hand, gets closer to her and says 'Kate, I can't lose you'. In that moment Kate appears next to Sophie and 'Batwoman'. Kate and Sophie later talk and Sophie doesn't think Kate's a Batwoman anymore and that she told Jacob Kane as well. Sophie gives Kate a gift and asks why Kate invited her to dinner before, if not to reveal that she's Batwoman. Kate says she needs to clear things up with her: that she can't get over her and that it's not fair to Sophie and to Tyler as well, which she, unbeknownst to Sophie, has decided based on the things Sophie told Batwoman. Sophie wants to object, but Kate cuts her off, saying Sophie was right six years ago and that maybe it's best if they keep their distance from now on. Sophie leaves and Kate opens the gift: Kate's sharpshooter competition medal from the academy, and Kate starts crying. Sophie goes to Tyler and tells him that anything she felt for Kate went away the day Sophie chose her future over Kate; that Tyler is the only one she loves. They hug but it's evident from her expression that it isn't the truth.
Sophie tries to mend her relationship with Tyler as they wait for a meeting with Commander Kane and she gets a call from Kate, which she ignores. As Kane enters and starts informing them of their job at the gala, Sophie gets a text from Kate that Mouse is impersonating Kane, to which Sophie responds immediately that she's 'on it'. Before she can react, however, Mouse tranquillises them both. When they wake up, Tyler wonders why Alice didn't kill them and Sophie says that Alice is trying to keep Kate in her life, prompting Tyler to surmise that killing Sophie would destroy any chance of Kate being in Alice's life because Kate is still in love with Sophie. He asks Sophie again how she feels and Sophie, pained, doesn't answer. After Commander Kane is arrested for Catherine's murder, Tyler asks Sophie if she loves him, then if she's in love with him. Sophie firmly answers yes to the first, but tells Tyler she doesn't know if she's in love with him. He says she needs to figure herself out and maybe he'll be around, maybe not, when and if she does. Sophie goes out in the hall at the Crows Central and cries.
The fandom has received the ship very well. A huge amount of it started to like and root for this pairing already after the first episode. Batmoore was gaining more and more shippers with each every episode, eventually becoming the most popular couple in the show.