I'm so sorry to hear that. I really hope everything goes well. My youngest brother went in for brain surgery last year and came out of it fine just to find out he had an ulcer in his intestine that ruptured. He went into sepsis and couldn't pull out of it. We miss him every day but the world keeps turning so we keep going. You're an amazing sister and you should be proud of what you can do for them. You'll be surprised what a family can do when they pull together. My best wishes are with your family.