I don't know. So far in my distracted reading of this (I'm on page 7- w/people coming and going in and out of my office) I don't see anything other than what we get on TV on a daily basis from him. He can be crude, over the top, impulsive, but I don't see any proof that he treated her any differently than he treats anyone. By the way, I've suspected bipolar disorder for awhile, but that's just my impression.
What we have here are two people who are hard to like. But I think she is the one I like least because I think it is most likely at the end of the day, political. I think she is a Michael Mooron.
Wait until you get to pages 14-17...Whoa, much more than TV.