My god it never fails to amaze me how cookie cutter letters like these are. (Granted the feelings and the people are not, but you'd swear there was a form book on how to cut out your loved ones).
They always quote at least one scripture, or a passage from the watchtower. They always insist on how they are doing this for themselves with no outside influence. (Which is bull!) They always make it clear that YOU made the choice...(the fact that they have choosen to cut you out is somehow less of an evil always).
It just slays me, how anyone could think a loving heavenly father would want a daughter to ignore her father and not allow him to come to her wedding, or meet her future husband.
I dunno what to say. It's frustrating. I think it's so shocking and horrifying every time I see posts like this tho, because I used to write letters JUST LIKE THOSE to my unbelieving family members. So I guess that is my only hope I can give you...I used to think that way too, but I don't anymore, and I realize that family is always more important than dogma. She is very young, there is still a chance she will rethink what she has said to you. She might realize her own role in this, and that it is her choice to end all this suffering...especially if you keep the loving communication open. You haven't shut her out.
Hang in there man...I was hurting just reading her letter to you, I can't imagine how that must have cut you.