That sounds interesting. And I'm not saying that magical healings should never take place in fiction, ever. But I think that the author needs to be aware of what they're doing and why, and also be prepared to address the negative implications of that choice as well as the positive ones. Because so often it does seem to be done simply to "reward" the MC and make non-disabled readers feel more happy and comfortable with that character. And neither of those are good enough reasons.