Over at FSU, someone said they saw Anabelle still on crutches at The Mariposa Gala and that wasn't that long ago. Plus, it's an ankle/foot injury. Those can be tricky to heal properly sometimes. Both due to all of the bones, ligaments and tendons involved in the foot and ankle and because you are awfully tempted to rush or push things before you really should. Just because you think things are good to try putting a wee bit of weight on the foot/ankle because the pain has finally gone and/or you're beyond sick of using crutches, doesn't mean you should do it.
And yes, I'm speaking from experience up there. I really do hope the reason they've w/drawn is simply due to them wanting to make up for lost time and not because there's been complications.