Nash changing?

As I continue reading  Unexpected I have begun to keep worrying about Katrina's relationship am trust in Nash. So after Nash chased her through their home and banged on the door screaming at her because he was mad she wanted to leave a rave, Katrina fell asleep in the bathtub. She woke up still in the bathtub and Nash was asleep on the other side of the door. Katrina let Nash apologize but didn't say one word to him the whole day. He just continued to baby her and make her food and let her cuddle with him. Katrina didn't talk because she was scared and confused about Nash's actions the night before. 

If I was placed in Katrina's position I would be doing the exact same thing, I probably would have already left and run far far away from him. But I can understand why Katrina is staying with Nash, probably because she feels safe at his big home and is already running from one ex-boyfriend. I would have just stayed or lived in the basement and let the relationship between me and Nash dwindle if he did this again. Because everyone gets mad, but when things get talked to an abusive level that's when they get serious. So I hope Katrina makes her future decisions like I would because If she doesn't I will loose interest in Unexpected very quickly, that is only because I want the best for my relationships in my cheesy teenage novels.