Glad you're enjoying the story overall! I am a little disappointed with this take, though.
I'd been trying to set Jamie up as a very ambitious person. In each of Episodes One through Three there is a discussion about her goals going beyond just working in the District Attorney's Office. Yes, she does protest when asked and says she's happy
for now being a DA. But she admits that she wants to be a federal judge, which I personally consider a very, very ambitious goal. She's even already applied to take on a second job as a law professor at a local law school, showing both her interest in teaching and, again, her ambition. In addition, her past job history clerking for a federal court of appeals and clerking for a United States Supreme Court justice are only things that an ambitious person would do. Even just the fact that she went to Harvard Law School is consistent with having ambition.
But I guess the problem here is that I didn't do a good job of explaining why these facts are relevant to showing her ambition. Most players aren't going to understand, for example, what it means to be clerk for the court of appeals or the supreme court. So that's my fault.
I do agree that she's leaving at a really hard time for the MC. But I think that actually makes her a much more interesting character. She understands that this is hard for the MC and she's really torn up about it because the job at Harvard is a once in a lifetime opportunity and she really wants it. But she also truly loves the MC. This is a very difficult conflict for her.
I do want my characters to feel real and to have their own hopes and ambitions outside of their relationship with the MC, even if that comes at the cost of that character's "likeability." The fact that we can't have everything we want in life sometimes will lead to hard choices. And hard choices are always going to make for good storytelling.