I think ignoring her calls right now is the thing to do. It it's important she will leave a voice mail. She has to realize it's not all about her.
Just remember when you do talk to her don't act angry, just act like she is a co-worker or neighbor. You wouldn't get personal with them so don't get personal with her. Act like you are okay. Keep your voice light.
Life's challenges are not supposed to paralyze you, they're supposed to help you discover who you are. -- Bernice Johnson Reagon