I agree with the mother, my reasons are simple, The mother is legally responsible for her until she is 18, The boyfriend is 18, She is 16 and still a minor. She also stated that her daughter already brought plane ticket to fly with her boyfriend who is 18, I wouldn't like that idea not one bit. She also stated that her daughter's boyfriend wouldn't even allowing her to have friends, That sounds controlling to me, I wouldn't trust him with her, because there a possibility that it would lead to verbally abusive and then led to physical abuse. Would I wanna live with that? No way! I would done the same thing that mother is doing to her daughter get restraining orders. What the mother is doing is the right thing, she is only looking out for her daughter's welfare, and protecting her from possibly of harm.
I apology but I disagree with Liebling and Angel and who ever disagree with the mother.