Re-skimming Disassembled, En Sabah Nur was actually really friendly with Kitty.
Can we get Poccy and Horseman Kitty with X-Tremists!Blob in 616?
Me: Bendis can be very hit or miss
Also me: Brian Michael Bendis was more than mutantkind's salvation, he was its very own God
I don't blind date I make the direct market vibrate
Kitty would be an awesome assassin. She would be the best Horseman of Death ever.
Katherine "Can't be bi, my life revolves around guys, guess I'll just die" Pryde
I don't blind date I make the direct market vibrate
I don't think she was jailbait in the Uncanny disassembled run, she looked like an adult there, and even had a leadership role. But I did notice that Jean, Kitty, and Elizabeth are all getting drawn as if they were teenagers in AoXM. I think Elizabeth is getting the worst but Kitty and Jean are a close second being drawn like jailbait.
My head canon is that she actually lost it to Rachel, but that's just my belief that they were originally intended to be a couple. Poor Marvel, they were scared to make it obvious in X-Men The End, but Kitty obviously had Rachel staying with her and they were raising a daughter together.