Which would be the best decision to make in this situation?

Okay, so I have been living in Long Beach in a beautiful home with my parents my whole life. My dad cannot afford the house anymore so he's moving to a cheaper house in Corona. The house they're going to buy is an hour away from my school and my boyfriend's work. I also hate it there; it's the most disgusting house and neighborhood I have ever seen and it's extremely depressing. I also cannot live with my father anymore, I do not want anything to do with him. My father is a horrible man who thinks about only himself. After we had the house payed off he forced my mom to sign papers to get a mortgage on the house. It turns out he gambled at his work and lost $200,000. Then, he forced my mom to take out all of my college fund money that my grandma had been saving for me, which was $60,000. He was supposed to send it to the bank so they could lower the house payments, and instead he kept it and used it to make the monthly payments, which obviously makes no sense because what was he going to do when he runs out of money? Well, the payments are $1250 a month, but he somehow spent $60,000 in about 6 months. Not to mention that he treats me like sh*t, not even like his daughter more like someone that he hates supporting and thinks that I owe him something even though he spends more money on cigarettes than he does on me. He also treats my sister a million times better than me because she works, even though she's a 21 year old city college drop out who works a job with absolutely no future. But yet I have my whole future already planned out and went from getting horrible grades in school to getting straight A's my whole senior year. I could go on for hours, but the point is that I cannot live with him unless it's my last resort. There's going to be about $15,000 left from the house, and my mom said she was going to give it to me so I can rent out an apartment or condo until I finish school. I would really like to live in a house because I am going to have a baby soon and I think it is more appropriate. I wanted to know if it would make sense to put $15,000 down on a small home in a so-so neighborhood, and from there maybe we would share the house with my boyfriend's brother and his small family, and he would pay most of the mortgage since my mom put the down payment. My boyfriend wouldn't be able to pay a mortgage because he only makes $2,000 a month, and I would like to focus on school and taking care of my daughter. My other option is to use the $15,000 to live in an apartment until I finish high school (which will be in august if everything goes well), or until the money runs out, and then go live with my parent's in Corona temporarily until I get my AA and my boyfriend finishes trade school. Although, I would hate to live there and I would like to do everything I can to avoid living there. Thank you for all of your help.