User blog comment:Megamon13/Whatever Happened to... Cristina?/@comment-18700030-20170710182225

I have a couple theories as to what happened to her:

-Lincoln's crush on her was just a joke/gag and she was permanently written off the show since there was no need for her anymore.

-The writers couldn't think of an interesting enough personality for her, so they wrote her off. Probably why they also didn't bother to give her a voice