How much is too much?

ShelbehhRawrr

This is a question regarding my brothers situation.

 

My brother was with his ex girlfriend since she was 16, they now have a 4 year old daughter and are living in Florida. My brothers ex girlfriend cheated on my brother and allowed the boy and his friends to come and rob my brothers apartment. So my brother left her.

 

Since then, he is not aloud around his child, he still pays half the rent so she has a place to live. and she deleted my mom, and everyone from our family off facebook so we cant see pictures of the baby anymore. (they live rather far away) she steals, she strips, she parties with her daughter around.. Leaves her with random people while she goes to work..  shes also belittling my brother in front of the child to get her to say mean things about him.

 

How much of this is legal? Is there anything my brother can do?