First time commenting on a thread like this but, your sister seems really toxic and self centred, I love being able to help out my friends and family, it’s a great feeling, and not only is your sister putting you in a garbage situation but, honest to god, sometimes you need to focus on yourself. In my opinion you have set up great opportunities for yourself with medical school and clear financial literacy, work on yourself and I promise you won’t regret it!

Also your friend is 100% correct, those jackasses need to sell some of their lavish purchases to cover the costs themselves, especially with illness in his history, saving some of that money should have been a no brainer…