Why did you put things in quotes that nobody said? When did you read "arms and feet"?
She is not selfish. She is selfless to a fault. She isn't putting more work on others, she just doesn't think it's worth the hassle of magically healing her when that effort could go to helping others. She isn't doing it just because she thinks she can make others work for her, and if you read what I wrote, you'd know that.
She does pull her weight, and she pulls it with one hand while everyone else is telling her to rest for a bit. Everyone offers their hands to her and she has learned, over many years, to accept their aid. They are not just hands. They are her fucking family.
Here's an example of how incredibly wrong you've read the situation.