I am so sorry for your sister's pain and I understand your concern. Being thousands of miles away makes supporting her even more difficult, not to mention the pandemic and all its complications! As a cancer patient I can tell you what really makes my day and maybe its something that you'll find helpful for your sister too. If she would be open to it could you have meals delivered to her door, or maybe a cleaning service with impeccable standards arranged to clean her place, or a simple care package to be delivered to her? Comfy pj's and fuzzy socks are very welcome! I find its really helpful when I can find something that helps ease my mind. Would she like to try a video game (I'm thinking Animal Crossing on the Nintendo system), or a computer game or maybe just crossword puzzles and that type of thing. I have a favorite water bottle that helps me keep hydrated. Maybe she'd like that too? Or just her favorite home made cookies? It's aIways good to know that someone is thinking of you, so phone calls and texts can raise spirits even if we can't always answer. I hope this is helpful. Remember its great when someone just listens and its awesome to receive a surprise in the mail. Sending hugs to you. Sincerely, Maria.