[How it ended: When Amy sent her friend Christmas cards in 2001 and 2002 and didn't hear back, she didn't worry. She knew her friend was busy with her children; so was Amy. But when Amy's dad died and the friend only sent a condolence letter to Amy's mother,] I realized it was probably deliberate, ... I'm not going to wrack my brain wondering what offended her. It just slowly dissolved. If she doesn't want to hear from me, I'm not going to bother her.