and this is the perfect way of getting her away from the X-men for good. She depowered under a million mutants, created loads of new ones and then brings back roughly 16 million mutants, which would take the X-men with their "marvelous" resurrection process decades to do. There she has gone above and beyond for mutantkind and more than any X-Men has done, so they have no need to go near her ever again.