Hi Almerinda and welcome here.
I can relate to your story both from both your daughters and your point of view. I had a Nfather and earlier this year I stepped out of a 12/y marriage with a NH. It's only last month that I saw things for what they were, that there was a name for all that abuse. Also I see the pattern, me as a daughter never being allowed to have my own opinion, not feeling loved, trying to finally 'do it right' in my marriage; I had to make that man love me, something he wasn't capable of. These's N's seem to have antennas for those who were 'programmed' already.
So please protect your daughters (and yourself) from this man, for you are showing them a role model that is not OK and you're allowing him to plant a HUGE seed of future misery into them. Believe me, they are better off with him at a distance. I have a 10y/o daughter and it took me a few years before I finally decided to pull the plug, so I understand your doubts. You've got to do it though, for yourself and for them. There is life after the N and you can be financially independent, so go for it, don't waste your life.
I am not a native speaker, I can't find the right words to express myself more clearly, but I hope you understand what I mean.
NeverAga1n