I wonder whether it's because she's in hospital and so likely to be seen by the public there and so it's known it's not 'a football injury', whereas other injuries, like Tomas Kalas', are treated in house and so details don't need to be given. This way the club have helped to explain a bit and cut down wild speculation, without giving too many details?
Wishing her a speedy recovery (and for her family) and thanks to all the great folk in our hospitals