And this is a question for people who are experienced not amateur like you
sweetie I have been there, done that and raised my kids alone.
Like I said if you want to show your daughter that it is OK for her to see her dad knock seven bells out of her mum, carry on.
That is no kind of a life for a child, and one that social services would not look kindly on.
I would advise you again to not look for help here but on a parenting website.