But she did while negating her previous statement about "need[ing] Emma's help." I actually think Leah intended Jean's retort to come across as shady towards Emma, which is unexpected and quite hilarious. Jean was like, "Um, on second thought, nope. She can't help here."
From issue one (these two panels are one after the other):
As for why Xavier didn't have either Jean or Emma help him in this issue, it's clear he's up to something. It amazes me how much Xavier has changed. I don't even recognize him anymore.