Emotional abuse

Anonymous is married and has 3 kids with her husband. She recently found out that the 'so called' nephew of the hubby, is actually hubby's child too. The hubby's babymama is pregnant yet again with his child. Anonymous does not have a matric so she's afraid to leave this man, he is abusive, talks down on her and makes he feel like she has not future without him. Should anonymous endure the abuse or should she take the kids and leave?