She is a face, the current Divas champion is also a face, therefore she has nothing to do since its impossible for the WWE to push more than one woman at any time. If Kong ever shows up and squashes Eve, then you'll no doubt see Beth again.
I've also been wondering where she is, she's one of the only over face women on the roster and she's barely on Smackdown anymore. Hopefully after Wrestlemania Kong debuts, they give Beth the title and voila!
Rosa Mendes fucked up her career. Maybe Beth would not have sustained the momentum of a year ago when she was turning face against LayCool but we'll never know. She was more over than ever before as a face, had just finally won the championship at the April PPV, and them wham she's injured. She returns at Survivor Series and does a whole lot of nothing ever since. Sad.