i'm so sorry that all of this has happened to you. what your mother has said to you is something no one should ever say to anyone, especially not when you've just gotten out of surgery.

whatever her problem is, it is because of her own insecurities, not because of you.

i hope that you recover quickly. i know that what she has said has hurt you very deeply, but try to focus on getting better. she may be your mother, but the way she is acting, she's just being ridiculous.