Quoting Mommy of 2 + 1 angel:" I don't know. We have a child together and I am scared to try to do it all on my own. I am scared that ... [snip!] ... myself and my girls. He doesn't treat the child we have together the way he treats my daughter. I'm at a loss on what to do."
then have a serious one on one talk with him and let him know what hes doing.. maybe he just doesnt realize how it may be affecting her
and in the meantime work on trying to become at least someone independent.. look for a job even if its part time, just something so if something were to happen, you wont feel as insecure doing it on your own