Personally, I wouldn't kick my kid out of the house unless she was a junkie or engaged in violent and/or criminal behavior.
I think Ashley's problems run pretty deep. Piecing bits of information together (from her own blogs, Twitter, Facebook, and Formspring), I think she's always been unsuccessful academically and socially. She claims she was the "most hated" girl in her high school. I know she was expelled from the Catholic school she attended with Christine Staub. I'm not sure if she finished her diploma at another school or got a GED. One thing is certain: she was a very poor student. I would think her only option for higher education would be community college, and I'm not sure she's ready to try. When failure is a constant for you academically, it's hard to get excited about the doors a bachelor's degree might open for you.
She seems to be hoping that her little slice of Bravo fame is going to launch her into a life path. She is supposedly coming out with a line of graphic tee shirts. Given the fact that she can sketch decently (mostly from photographs, apparently), I am surprised that Chris hasn't tried to land her a job with a clothing manufacturer. He must know a lot of them, as that is his business. Maybe he has tried, and she doesn't want that. Who knows?
She also spends time in Texas with her other family. If the Lauritas were to kick her out, I imagine that's where she would go.