
Quoting
cbg
Get the idea that your mother will gain custody right out of your head, because it is NOT going to happen.
The first thing you can do is STOP CONTACTING HER. And if she contacts you, hang up.
As long as she is under 18, what Mom says goes. if Mom has said that she may not have contact with you, then she may not have contact with you. There is NOTHING in the law that is going to force a parent to allow her minor child to see or be in touch with someone she doesn't want her to see or be in touch with, regardless of what a nice guy you are.
If the physical abuse continues, your girlfriend can call CPS. If they find it necessary to take her out of the home (which is not likely) they will NOT be sending her out of state.