Oh, such good news!
EndGame, if it is appropriate, please let Mary Ann know there is a whole world of people happy to hear that the treatment has worked so effectively. I'm thankful that she was in good hands, medically, and that you were there to be such a champion for her.
Maybe Mary Ann should celebrate with a trip to Paris. And take her brother with her for a much-deserved vacation.
All the best to you and your family.