Vera is grouped with Jankovic, Azarenka and Clijster. In 2010 alone (because for me her 2010 form is equal, if not better than before she had that terrible injury), only Azarenka has better H2H against her. For Clijster, I'm not too worry as this is not slam.
Then, from the other group, only Wozniacki and Dementieva has better H2H against her, but I'm not sure Dementieva's mental state can get past players like Stosur and Schiavone that easily.
So, overall, Wozniacki can be her biggest obstacle, but with this odds +581, why not? For me, Woz v Vera is 50-50 match and don't forget, the power of her new handsome coach