Jennifer Lawrence reveals why she chose to return for ‘X-Men: Dark Phoenix’

My contract was up, I didn’t have to do another one, but if I didn’t do another one, what would her story be?” she told Digital Spy.

“I felt like I owed it to the fans, and I owed it to the character to follow her journey, to be fair to the movies, and not be like, ‘I don’t want to do another X-Men!’ And then I just never show up and everyone’s very confused about the Mystique they’ve been following for the last three films.”