Mom of 12yr old

I am hoping for input here- my 12 yr old daughter was doing gymnastics in the house (a move she deeply regrets!) and hit her arch on the door frame. She has been in pain since. An MRI and x-ray revealed no breaks but at the tendon where it attaches, there is significant inflammation. She has an extra navicular and very flat feet. The tendon is attached to the accessory bone. She has been in & out of a boot (mostly in- now transitioning to a tennis shoe with lift) for 4 months now and been in PT for the last 6 wks. Her ankle is weak and she still has pain daily (at times waking her at night). We saw the orthopedic dr today and discussed what to do from here. He expected more progress at this point. Our options- continue therapy or surgery. Surgery would be the modified kidner procedure as well as removing a small part of her heal bone (I think I have that right- hubby has the papers at work) to address the flat foot. She is a very active girl who has been very limited by this. We were told recovery would be 6-8 wks NWB and immobilized, followed by increasing activity and weight baring with PT. Total recovery 4-6 months. Wish we had a magic ball. If we do surgery, we would like to do it soon so has limited time on crutches when school starts back up. We are struggling with what to do. Any words of wisdom?