Can I just tell you how lucky your girls are for having a strong, kick-butt, compassionate mother, who is clearly doing everything in her power to keep them safe and happy?
Do you know how many mothers just sit there watching their children get abused, and wring their hands and hope it somehow gets better--and never ever move a muscle to protect their kids? Even in countries where there are laws and court systems and DV resources ready to assist?
Yes, this is a hard time. I promise you: when they are older they will look back on this and get on their knees and thank God that they had a mother like you.