I know this feeling and it absolutely sucks. I'm sorry you're going through it.

Has she ever said she would call back, etc. before and missed a deadline? Some people are more detail oriented about these things than others...

I know that as a patient it can be hard to get through and get a straight answer from an insurance company. Maybe she's having trouble too, and is waiting until she gets a clear answer to call you back? It would be nice if she could have kept you in the loop either way though.

Hang in there. As hard as it is, I usually try to stay busy or get distracted at moments like these. Doesn't always work, but worth a try maybe...