In my opinion she's just not photogenic. When she was on the show, before she took any photos, I saw some potential in her look "in person" but she always looks a bit off in her photos.
Ya know in cycle 10, tyra's pets, whitney and dominique aren't really doing much nowadays. Whitney looks like a boiled lobster and Dominique has a couple of test shots. Tyra's "extras" Katarzyna and Anya are doing fabulous. People would rather see the runner-up and the "no personality" girl model, rather than the winner.