Happy Birthday Rick, if this years one is tough,take heart that next years b'day will be better. Winston Churchill said, "When you are going through hell, keep going!" You won't be in it forever.
Daughters at that age are hard, she's going through her own pain as well probably. Most people I know that have split up their kids come around and end up being more loving and caring towards both parents than they had before, for now all I would do about your daughter is keep loving her, it will come back to you eventually.
