Physical abuse

Little backgrounds: I've known this man ace since we were teens or at least i thought i did. Hes been a friend of mine and my husband for years. 4 years ago he got married fell on hard times and ended up homeless with his pregnant wife. Me being a women and mother, i felt bad and allowed them to stay with us for two weeks till i woke up one morning to yelling i was so confused and asked them to leave. They ended up staying with another friend of ours and I didn't see them as often. A month before her due date they called and asked if we could help them move to a shelter. With no hesitation we said yes hoping for the baby to have a more stable life. After the move we heard nothing from them everyone was calling them and they were no where to be found. Almost a month after her due date we got a call saying they were leaving the shelter and going back to our friends house. We ended up seeing them maybe two weeks later. I asked for the baby and ace says "he was taken away by dcf cause of this **tch". I'm shocked and confused the only thing that came out my mouth was "watch your choice of words". Time goes by and the wife tells me they took the baby because they found crack in his blood i only sat in listened because i had no words of advice for her. She also told me that when she first got into a relationship with ace she had 3 other kids which were also taken away by dcf. At this point I'm trying to pick my jaw up off the floor. She refused to say why but obviously it wasn't for no reason. Sometime went by and ace calls asking to stay here a few nights because he got kicked out of our mutual friends house. I told him no unfortunately my family has grown and I don't need any extra responsibilities. He tells me and hubby he got kicked out for arguing "not surprised also not my problem"

End of story (long story short) he has been beating his wife since they got together "reason" why she started using crack dcf came by the house told her to leave ace and she could get her kids back she was to scared to leave him so she lost those kids and couldn't pay rent and lost their apartment. Beating continues, then shes pregnant. Ace gives her hope to change because its his first kids no more physical abuse but a whole lot of mental abuse and that's how she ends up doing crack while pregnant. Blame is thrown back and forth till she got tired of all the abuse and left him but got into a relationship with a woman two weeks later still living at the mutual friends house 🤦‍♀️ its a mess 28 and 30 years old its really sad. It took for them to break up and him to find out she was seeing someone and give her one last bad beating for her to speak up and say he's been beating her for years. Which is what started the argument that lean to him getting kicked out. Ace has been calling to ask for favors "can i shower there, can i wash some clothes, its cold outside can i just warm up" i keep saying we aren't home which isn't true. I was in a domestic violence relationship for 3 years and I dont tolerant any man who beats women. So i sat down with hubby told him how I felt and he in other words told me I can't save someone who doesn't want to be saved he was aware of what was going on and him along with the mutual friend told her to leave him offered different help, called the police, ect and she always goes back. This poor women has no family and no friends of her own all she knowns is what he has given to her i want to help this women and i don't know how to.