I told her not to waste her time. If that friend gave into the pressure from the friend she had a falling out with and not even hear her side of the story she's not worth it. And whatever she says not going to change anyone's mind.
It sounds like she is in her mid 20's. She's dealing with people who, based on the description, stopped maturing in junior high.
She needs to let it go, move on with her life and not let their pre-teen drama affect her.