^It may very well be that she's simply seeking to protect the world's remaining mutants.
You know what would be a really cool twist ? If she was there with Scott's blessing.
I can't help but think that someone like Mr. Sinister or Magneto might have taken her place if they were available, though.
I think Sinister is dead which is why he couldn't be used, but what is going on with Magneto these days? Honestly, I haven't read any X books since Messiah Complex since they have sucked royally, or so I hear.