Someone has legally claimed me as a dependent, but I was forced to move out and need my return to survive, even with benefits. What can I do?

I was living with my parents until a month ago, then had to move out because I was a victim of domestic violence and ended up emancipating myself. Now I'm trying to file my tax returns, which I am certain I'll need even with my benefits, but they've already claimed me as a dependent. Can I still get my tax returns or do they get to keep it, and screw me over?