Seriously? You stayed in an abusive relationship with a man who abused hard drugs, and alcohol, and treated you poorly?! And, you say you protected your daughters from the abuse, many break-ups, divorce, and re-marriage ... and you did it all for them? The fact that your daughters finally left because of his heavy drinking, and aggressive behaviour, shows that you didn't protect them from it at all, did you?
The best thing you could've done for your daughters, all those years ago, would've been to leave him, and protect your daughters the way that any good mother would! They have probably been scarred for life by what they have seen and heard. Frankly, I'm not in the least bit surprised that they have distanced themselves from you. I think they deserve to be left in your will ... not because money will ever repay the damage you have done to them, but you did after all say that you'd done it all for them! What a terrible thing, to write your daughters out of your will now, just because you can't have it the way that you want it. You probably put those girls through hell when they were growing up, and it certainly doesn't sound like you ever made them your priority, so you can't expect them to forgive and forget, and take you back into the fold.