I hesitate to answer this Q, because I don’t want to cause you more pain. Maybe knowing you are not alone will help, but I really am not sure. I find in these situations it often doesn’t. It’s not uncommon for parents to exclude children in their will if that child cut them off from communications. I don’t know if you were the one who cut her off, or if you both just stopped communicating, or if she did it, or what. I’m not assuming, but I can tell you in my experience, usually, when a child cuts off a parent the pain for the parent is incredible. My sister cut off my dad years ago, and it’s agony for him. I try to tell him I see this happen in many families, he has friends in the same situation, and it doesn’t help him feel better. Often, those same children just see being written out of the will as more proof of why they had shitty parents, and were right all along. They also, often, resent the person who did get the money, like siblings, grandchildren, or even charities. Sometimes, the parent truly was horrible, sometimes not. Again, I don’t know your situation. It’s understandable why you are so upset. Especially, if this is just a resent estrangement. You would think 40 years of being there as a daughter would count for something. Your mom put your daughter in a horrible position too. Giving her everything meant risking strife between you and your own daughter. Will your daughter share the wealth with you at all? Has she said anything to imply she wants to, or have you asked her about it. You could ask a lawyer if you have any legal recourse.