Dub-Dub Is on GREY'S Now?!?!!

So, I'm watching the new episode of THE COOKIE (don't ask!), and I just saw an ad for the next episode of "Grey's Anatomy", and...
Natalie Morales is clearly in it!
And she seems to be an important character (judging from the ad).
Deadline or TVLine described Morales' role as "recurring" (and recent), but I wonder if she's going to get upped to main cast for next season of "Grey's"...
NOW ANIM FINALLY HAS A REASON TO WATCH GREY'S!!1!  :)  :)  :)