Family threatening to take things away and have me removed

I work for my mother and stay on her premises. She doesn't like my boyfriend due to race and is threatening to kick me out. I do pay rent. Is that legal? Can she "fire" me immediately? What do i do? I also have a car which she helped me buy but majority of the money came from selling my old car. Can she keep the car from me? Its still in the previous owners name. Can she take away gifts given to me from long ago? Can they take my son from me? Cause they are threatening to do so.