All sounds on track. Catching anteriorly (or anterior impingement) might just be a common protective post injury due to overactivity of the achilles (via soleus) during the plie. This can often be reduced with AP mobs of the tibia on the talus. Give is a bit of time that's all and let her know it will take sometimes 6-8 weeks to restore full dorsiflexion during plie on that leg.

Can you confim whether she had an xray? or whether you have cleared the possibility of any small avulsion fracture of the distal fibula or any talar dome involvement? 8o