From what I have read DeShields played with an injury her freshman year and that was supposed to have healed during her off year since she was practicing with the team last season. If the pain she is having is from the same injury after over 15 months since her last game there has to be some concern.
I don't know if it has ever been stated specifically what the injury was or what it involved, but it could be something that may give her some measure of trouble from now on. That doesn't mean she will not be able to play or perform at a high level; it may just be something she has to work through and learn to manage and deal with. And honestly, she could have aggravated the old injury during practice for the World University Games and felt it better to sit out rather than risk really damaging herself. Again, I'm just glad Holly was there to make sure she didn't play when she shouldn't have been.