Quote Originally Posted by WallStreeter View Post
Emma Frost mentored Jeen, and now that the o5 went back to the past, Jean remembers being trained by Emma Frost. Emma was professional enough to put aside her differences with the adult Jean and train Jeen. In the Jean Grey book, we see Ghost Jean and adult Emma again be professional and work together.

Jean actually died, came back in Endsong, went back to the White Hot Room/died again and came back for good in Phoenix Resurrection to a very different world. She's in a different place.
Jeen also saw the bad side of Emma. Ghost Jean had to accept Emma help to save Jeen from her own plan.