But then... why does she mention she cant run?
Is that like a mental block?
I think that's most likely, a teenager may have been more mentally affected by something like that.
in real life ACL is not necessary a career-ending injury, players like megan rapinoe have suffered several injuries like that in her career, and yet she has been one of the best players, Alexa Putellas had an ACL injury in 2022 and recovered and won the World Cup in 2023, she didn't play much but it was also because she didn't fully recover as she rushed to go to the world cup, but nowadays she is still playing in barcelona and in the national team.
It remains to be seen how the mangaka handles it but everything seems to indicate that it is more mental, I mean not only was the injury but that also ended up causing fights and her parents' divorce, and that she was the object of gossip at school, if you add to that a re-injury makes it fatal for the mental state of a teenager athlete.