My mum was in a violent relationship with my 'step dad' and although i was older (19 when they married) and i knew what was happening i could not get her to leave.
It started out with him having one too many and then all of a sudded she didnt love him enough - SLAP thIs carried on for sometime she told the police and pressed charges.
All of a sudded he couldnt hit/beat her with out going to jail so he just poured hot drinks on her or held a hot iron inches from her face because that he could get away with
In the end she took herself to hospital with blood coming out of her ears he was full on sorrys but after all it was your fault for x y & z and to top it all his mother came out with "its not his fault hes tired you now"
MUM DIDNT LEAVE UNTILL HE HIT ME.
By this time i was 22 and she didnt fully stop contact untill i 23 and pregnant and told her i would not let her have anything to do with DS if there was any chance he might be around as DS would not be safe.
I have still not fully forgiven for not leaving earlyer for not staying safe for not wanting to be safe and alive enough to leave for me.
You do not want your children to feel that way about you to blame you for not keeping Them safe for not keeping You safe. You do not want them to grow up without you. You do not want them to feel guilty or that any of this was/is there fault.
One thing i read when i was trying to understand why she wouldnt leave was:
"In a voilent relationship the bond is tighter because you fall in love and have a honeymoon period. Then everything goes along fine. Then there is an outburst. Then there is the sorrys it wont happen again if only you did ... it was just because ... Then your back in the honeymoon period and the bond between you becomes stronger, you dont think it was that bad really, more impotanlly you both dont want anyone to know, and so the circle goes round the bond braking and rejoining even stronger to keep the secort and to smooth over the cracks"
My mum aways says its like a mirror once its been broken (the trust) you can put all the pieces back together but they never go back as before and the cracks will always be there.
His outbusts will become bigger and more often.
Do everything you can to make sure you and your children get out of there safely!