Okay, so apparently, one one of the ducts in her breast, she had an overgrowth of abnormal cells. Which means pre-cancer, not cancer, yet. She goes in next Thursday to have tissue from the surrounding area removed and tested. If everything is normal, then we are done. If not, then I don't know, and my mom did not ask.
Thank God for that cyst, which had nothing to do with anything, and was even on the other side, but is how this all got discovered at all. It would have been another year until her routine mammo.