I am sorry to hear that it didn't go better.
I am on the ipod, so i can't be too long.
What i am getting is that your BFF sees your relationship with her as a validation of her own choices. You said you went to school, had babies, etc. together and it even looks like you both followed the Life Script together, and she sees you as her personal human mirror. If she looksat you and you look the way she imagines she should look, then her brain tells her that god is in heaven and all's right with the world.
You just took that away from her.