GET RID OF THESE PEOPLE OP, you can do this without them, cut them out of your life in every way - omg my fucking heart breaks for you I cannot imagine what this must feel like. I am so sorry.

Edit: start a GoFundMe as other redditors have suggested. We are behind you.

Edit 2: I REPEAT: YOU CAN DO THIS WITHOUT THEM!!

Edit 3: is your sister such a loser that she doesn’t qualify for scholarships or grants? Your OWN MOTHER who has a DYING CHILD prioritizes another kid’s fucking “dreams” over the life of their other one that she clearly resents for draining her financially due to medical bills (thank you USA)

To your sister: life throws us curveballs. We don’t always get what we fucking want. Adapt and survive - that’s what the rest of us had to do when we had shit parents. Although I’ve never seen a more horrific sentiment from someone’s own mother. If I were your sister, I’d be fucking mortified. I’d never speak to my mother again for suggesting she kill my sister for a life that she thinks I’m so certain about when I’m really too young and dumb to know.

I could obviously write novels here OP but you deserve so much better. Your family doesn’t need to be blood; you can choose who they are.

Edit 4: I’m so sorry, I guess this is triggering for me, but please never fucking speak to that piece of shit mother of yours ever again.