I'm working on my season 5a/6 Marvey AU today and it took me an embarassing amount of time to realize that Rachel called her Dad first when Mike was arrested (before even telling Harvey) because her first impulse was to find a way to force Mike to turn on Harvey. The worst night of his life and she sics her angry father (who will now hate Mike forever) on him to manipulate him into betraying the one person he might love more than her.

She didn't just think about it for a second like she admits to Mike when they fight, it was her main goal from minute one. She only backs off when Mike freaks out when she vocalizes it. It's like she only realizes in that moment that he may actually leave her if she tries to push the issue.

I get that she resents how close Mike and Harvey are and she feels like Harvey put Mike in this position. But Mike's just as guilty as Harvey is, and she wouldn't have given Mike the time of day if Harvey hadn't brought him in. He's the only reason she has Mike at all, and her first impulse is to throw him under the bus regardless of what Mike wants.

It just makes Rachel's entire character feel icky. Like I know Gibbs tries to get her to make a deal to go against Harvey later in the season but the fact that it's literally her first impulse without Gibbs even making the offer is just... ick.