Ouch, that's a shocker for Anna. However, clay is definately her worst surface so I wouldn't expect much from her over the next couple of months, think she'll be one to watch on the grass though.
She hits very hard and flat and really goes for big winners off both sides which is perfect for grass and indoors but not a good recipe for clay-court success, she's just going to end up getting frustrated into errors by canny clay specialists .