Ruptured mine at 23 playing racquetball. Surgically repaired that night and plastered for 12 weeks with plaster change after 6 weeks to move the foot to neutral. Unfortunately, the plaster tech couldn’t read the registrars instructions and my foot position wasn’t changed so I had 12 weeks in plantarflexion.
Rehab at home and a few physio sessions, back to some sports/able to run tentatively after 7 months but didn’t go back onto a squash court for 7 years. Not because I wasn’t physically able to but mentally I struggled.
Tell your sis to be patient, they take a long time even when you’re 23 and indestructible…. Age plays a part in recovery times I’m afraid
Pain is not a reliable indicator of degree of damage. Complete rupture can be relatively painless (once it’s happened) unless someone does the Thompson test on you…..
Anyway some good came of it…..I became a physio :)