Not twins anymore

So, this is a story actually from a reading book in school but it’s a small story about a girl named Alice and Jenny, they’re identical twins, also their father is gone and their mother is fine, so one day Alice gets into an accident and basically what happened is her brain still works but her body doesn’t and another girl who got into an accident named Gail, her body is fine, but her brain isn’t, so what they do is try something they’ve never tried before, a brain transplant.