Then just resurrect her. It doesn't even require a lot of plot build up.
"Oh, we found an egg, wrapped in an old mattress. Look! Behold, the Phoenix hatches!"
"Hi everybody! I'm Jean! I'm keen!"
"We love you, Jean!"
And, Cyclops leaves whoever he's with to follow her around.
Scene.
Made.
Other than her big-sweater den mother period in Generation X (which didn't even last all of Gen X), she's always been a leather domme for whom white panties were daywear. A dedicated teacher and bodyswapper who manipulates, lies, and hurts people for profit.