I see that although your nose has collapsed, it is not in that deformed state. Although I put up a mosaic, I can see that she is a clean, exquisite and aura girl, and I don't think it is necessary to repair it.
Secondly, plastic surgery is a big event, and it has a problem of completion, that is, its result may not be what you think. And once fixed, there is no doubt that it will last for a long time. After all, muscles and bones do not grow in a natural state.
My suggestion is that if you don't do some jobs that require high facial requirements, such as actors and models, you can keep your knife.
But I think you feel inferior because of it. It would be best if you can believe that you are a refreshing and beautiful little girl (I really think so). If you are still not confident, you can certainly do it in order to rehabilitate (very important).