You're doing a great thing to help her out, but she has to learn from her own mistakes too. When you're 16, you know better than to sleep with men, and so this pregnancy is her fault too, like you said. If the future husband is/was hitting her, she needs to get away from him, yes. Be there when she needs a friend to talk to, but don't do everything for her. She needs to look for options on her own, and if she descides to marry that guy, she may learn a thing or two. Just be there for her.
I don't know if this will help, but:
http://www.dhs.state.tx.us/programs/.../shelters.html
http://www.womenshaven.org/
http://www.gtii.com/members/lannin/s...as.htm#ftworth