It helps me when I remember what my denial looked like (and I was in it for so long). The only difference between where she is now and me is time and a lot of meetings.
She also had an (I think) a functional alcoholic husband too.
That does not mean I did not get mad (cause I did). I had to cut contact too. One time really sticks out. She told me how when he was living with her he was spending all this time out with the guys with football related (and drinking stuff), but in the next sentence told me that though she thought one of his friends had problems with alcohol, she did not think her son did.
As much as you are upset, I think you are doing a great job trusting you for you and the girls.