Well done OP for getting him out.
Whatever your girls have said to you about being ok, I would take with a pinch of salt, unless their own lives are similarly chaotic?
It doesn't sound from what you have written that it was, so this last year will have been very confusing for them, whatever they say.
I think doing some work on your boundaries is very important, because your daughters will model what they accept from how they are reared.
In your place I would be very frank and tell them you made a VERY big mistake and you were VERY wrong.
That you thought doing something kind was more important than keeping your home a safe place.
That you allowed such awful behaviour to continue because you liked the Dad.
That you realise what you did was very wrong.
That you should NEVER put the needs of strangers ahead of whats best for yourself, in your own home.
IMO it is important to be able to tell your children that you have messed up and that you have learned from it.
If you press that point home you can find some scrap of good in this awful situation.
Women are conditioned to look after others, ahead of themselves, I certainly have done that at times in my long life.
I have 4 children.
Two boys, young men, that I do not have to have the conversation with, as they, while lovely lads, just naturally have excellent boundaries and a "fxxk that" attitude to any hint of someone stepping on them.
With the girls I have had the conversations to remind them of the critical importance of loving THEMSELVES first, put themselves first, be kind to themselves first, before they run around after other people......in particular boys, and men.
My youngest came home one day years ago from school, having brought a large box of Scandinavian sweets that her father had given her into her class.
She shared them out, they were delicious, and children came back for more.
She didn't end up having even one herself🙄
This is where it starts.
Red flag to me as a parent that I wasn't doing as good a job as I had hoped.
We have had many, many, conversations since that day a decade ago, that loving yourself first is SO important.
Looking after, and being kind to yourself is so important in any relationship.
The relationship you have with yourself comes first, always.
Particularly with men.
Best of luck to you and your girls.