Audrey,
Just have to tell you that the way you titled your thread made me have to read it. I didn't get a call on Mother's Day.
I just hate that expectation thing that CodeJob talked about. It happened to me.
I spent a really bad day yesterday after finding out that my sister told my daughter that I had never wanted her. So I am seeing things a lot clearer now into how my daughter and I were with each other.
Sometimes things aren't just black and white, sometimes there are gray areas.
Just know that you did your best with what you had to work with. Also consider that your daughter is also trying to do her best. (In no way am I ever suggesting that what happened with me and my daughter is the same as your situation).
I think what I am saying, is to Let Go Let God here. It really could be that the line was really long for the phone and that she couldn't.
I do understand your pain though.
(((((((((((hugs)))))))))))