legal separation

Im so glad i found this website. Praise God for it. I want to seek advice for a friend who has a husband who physically, emotionally, verbally, psychologically abused her but the physical abuse only stopped when he put him to jail temporarily for RA9262. The case did not pursue. After this incident, my friend left their house but was pursued again by her husband but was skeptical since she was not being invited to go back home. She learned that her husband was bringing her mistress to the house. My friend went back to their house and stayed their for another six months to give the marriage another chance. She experienced psychological, emotional abuse again and even worse from the husband and the mistress. The mistress was too aggressive and hostile towards her (she experienced the same from her husband). She left again after 6months because their child was so confused and it was evident in the child's behavior since the husband brought the child to the mistress and due to too much stress and argument in the house. Until now, the husband is pursuing her but makes no effort to bring the family back together. He does not even want to give her all of her personal things. My friend receives no support from the husband. She is just being used for sexual satisfaction. Right now, my friend wants to work and go abroad for their child's future. She wants to end her connection with the husband. What can she do? btw, the child has a simulated birth certificate. The husband is threatening her to report it to DSWD while the truth is he was the one who orchestrated the simulated birth. What can she do?

"She is just being used for sexual satisfaction."

it means she consented to the fact that she is living with the mistress?