in case of any fracture
its takes a long time to recover completely. its only five weeks now and it needs another 2 to 3 months before your daughter should be allowed to undertake her sporting activities normally. and since you said it has involved the growth plate so you need to be careful that no further trauma is there on that area that worsens the fracture. i think your doctor must have advised about the weight bearing and all for time being. so follow his advice and it will improve completely with time as its still a growing age.