Amber's Heart Surgery Fund: Urgent Help Needed

Hi I’m Amber’s baby sister. As most of you know, we lost our Grandma last winter and Amber lost her husband last summer. Amber has spent decades taking care of them both selflessly. She had a stroke last year, and has continued to have mini strokes, and has had several heart issues over the last year. She needs to have a heart surgery and without it she will die. She has spent the last six months trying to find a cardiologist that would accept her, they just kept referring her to someone else. She finally found one but her insurance will only cover so much and the hospital will not do the surgery without the rest of the down payment. My sister makes $16 and hour and they won’t even consider giving her a raise because she has had to take off work too much for doctor appointments, not only for herself but for my grandma and her husband. She has no paid leave left. Please if anyone can help I am begging. I don’t want to lose my sister and my babies don’t want to lose their Aunt Ambee. She would just die before asking for money so I’m doing it for hers she gives and gives to everyone and never asks for anything.