Please be careful. Domestic Violence and Abuse is not as easy as someone outside of it thinks. There are many facets you may not be aware of.
She is a young woman at 18, with a 1 year old child, by a different man, than the 15 year old who provided a stud service.
She needs to get her act together before she gets into another abusive relationship. She has some options now, ranging from giving up her child, getting sterilized and continuing on with her man-childs, to putting her child first.
No one is going to get her act together for her.