I think you have done some untold damage to your relationship with her. And dismissing her how you do regarding events that happened to you, implying that she shouldn't be affected by it is just hoping this "problem" will go away!
Like it or not, when we have kids we make a contract of sorts with them to get them to adult hood with as little damage as possible, and you don't seem to care about that!
I have been through my mother's marriage to and divorce from my father. Several boyfriends.
Her wedding, marriage and divorce from my stepdad, and her affair fall out during that marriage.
The horrible way she treated my step dad who I still adore, him leaving and her moving her boyfriend in the next day (he actually started to stay over before my step dad left)
Then her marriage to him, and their constant fighting, and her blaming us for any issues they went through.
Then her "attempting" to commit suicide (by throwing pills all over her room, not consuming any), on his deceased mum's birthday of all days (yes, deliberately to be spiteful because he was upset and not focusing all his attention on her)
Believe me, it has an effect on you as a child. This all happened before I was 16 by the way. I totally get your daughter not wanting to reconcile, because you appear to be failing to see how hurt and in need of help she is. You don't have her back in all this.
I really hope she has someone genuine on her side.