if its not to personnal why does she want to leave him? or have you asked her to?
I had a ex boyfriend that was a total loser, fleeced money and eveything out of me, i could see it until i caught him in bed with another person, even then i truely belived i had imagined it. It took me a long time to actually finish the relationship rarther that just say i would. sometimes you get so used to being with that person that you think life without them would be rubbish. i eventually though just left and that was that. i suppose she has got to be ready.