Maybe in the 4th or 5th movie, or maybe after Spider-Man defeated Sinister Six.
X-MEN RI5E' MUTANT OF THE MONTH | JEAN GREY | PORTRAYED BY FAMKE JANNSEN
"All kind of things." - X1
"This is the only way" - X2
"Kill me before I kill someone else" - X3
"Where else would I be?" - X4