It seems to me like she is in a life threatening situation where she can't really press charges because he blackmailed her on something somehow so she is not in that too good of a situation also it seems to me that the mother prefers her daughter to smoke weed around her and not with the kids and she is trying to keep tabs on her daughter to keep her daughter alive while she figures out something and she is trying to keep him away from her daughter as much as possible. It may not seem to you like she is trying to be a mother to her daughter but she is and she also is basically stuck in the situation until something better happens for her and her daughter. My prayers go out to them. He knows better !