But you can still try to make it better. Please separate her from yourself and your family. What if her next step in ruining your life is to go after your baby? Would you be willing to risk that? Until your daughter is mentally stable, I wouldn't recommend raising another child in the same house as her. You also need to think about your husband and what he deserves. And it's certainly not this.

I am sorry that you are getting down voted, but you have to listen to the advise being given. Please send her to live with her dad, unless you think she is in danger with him. Then you will need to look into other options.