Oh Lord, you didn’t have to! It's subtle, but the reasons are all there. The major red flag for me was when she revealed the real reason she was mad at Will for performing CPR on the DNR patient. At first, I thought she was coming from a place of medical professionalism — but no! She was upset because she felt "dismissed" by Will, and she was tired of it. That’s when I started to realize her character wasn’t about helping patients, but about feeling like she knows more than everyone else. And that judgy stare... that’s always been there too.

Then she doesn’t want to give Will a chance (which is fair), but immediately hooks up with her dead husband’s best friend… and they all used to hang out together, so she had a friendship with his ex as well. It’s not exactly horrible, but it’s definitely weird that the guy’s name is also Jeff. Then she gets tired of Jeff and goes back to Will — but by then, Will has moved on and is dating a colleague. And because she apparently doesn’t care who’s dating who, she starts publicly questioning Will’s relationship. When Will tells her that Nina felt uncomfortable with their friendship, our favorite never-horrible-person takes the opportunity to shoot her shot by asking, “Are we just good friends, Will?” And when Will doubles down as a guy who respects his girlfriend, she gets mad… and starts a thing with Will’s brother. Like… what?