A.K.
Wow, talk about tough. I was once in a dysfunctional relationship so I know how hard it can be to get away both physically and emotionally. But once you have kids and addiction issues to deal with it becomes a whole new ballgame. There are some addiction issues in my own family so I understand some of these complications.
There are a few ways this can go and none are particularly easy.
Start by talking to your daughter one on one. Tell her that you are scared for her and your grandchildren. That you’re afraid that your family is being torn apart (obviously the two oldest kids are already keeping their distance) and you want to help. You daughter obviously has trouble detaching from this man. This could be due to love or fear or just part of her addictive nature. I’m thinking it’s most likely this last one, most addicts trade one addiction for another when they “recover”. Because of this you really have to tread lightly. I know you hate him but you can’t vilify him or it will only alienate your daughter more. If you focus on your fears for your family in your conversation there’s a chance she might see what’s happening and agree to work to change the situation.
Sadly this probably won’t work. I hope it does, I really do. But the sad fact is that this kind of behavior is very hard to change. Do her son and the youngest have the same legal father (I say legal rather than biological b/c when it comes to custody what it says on a birth certificate holds a lot more weight in court than what it says in our DNA) and do you have a decent relationship with him? If so you need to talk to him about getting the 9 year old away from this situation. If you are financially able to take in the 17 year old so that he can finish school with his friends and his father will agree to it that may be best for him. However this starts to get into all kinds of crazy legal stuff. You may need to prepare yourself to go to family court so you should get a lawyer. Also be prepared for this to get very ugly before it actually starts to get better. I hate to say it, but the bet result for the kids may be for their mother to file abandonment papers with family court and have the kids go to live with you or their father. Getting that done will inevitably be a fight.
I hope this works out for you and these kids and I will send all the positive energy I can spare to you and them. And good for you by the way. All too often children suffer these issues alone b/c they don’t have extended family to fight for them. It’s wonderful that you are helping them. They will be better for it.
Good luck
Alli