I also think there must be somethingBut she must spit it out sooner Hope she doesn't die in the end tho 😐Then…
What I believe is Park Jun herself looking for excuses due to high expectations, training, relationship, etc etc. And then she got the chance for her freedom and she grabbed it with both hands and blamed FL for her injuries and her early retirement.
Ending is ok ok for me. There is no official love confession till the end. But I think his actions and care for her is more than enough for her then any words.