I (15f) live with my parents and sister (18f). Our grandma lives down the street.

Our grandma is rich. Like the kind of rich where she doesn’t know how much shit costs, she just gets it. She and my sister are best friends. I know they talk a lot of shit about my aunts and uncles and cousins and my sister keeps her caught up on family drama now that she’s not able to participate in many family gatherings anymore. This is all backstory.

Some other important things to know is that we live in one of those towns where there’s a single pharmacy for 20 miles and my sister is immunocompromised.

My grandma made a deal with us that as long as we get good grades and stay out of trouble she’ll get us a car and pay for our college. My sister was a solid C student but nobody cared because of her health issues and autism and anxiety and depression. I know she used to get in trouble at school but the people in the office loved her because she used to help them out with stuff like answering phones and making copies and delivering stuff to teachers during her free period so nothing ever stuck. My teachers and the office people fucking hate me so even tho I have straight A’s I get in trouble for the most random shit. Like I got suspended for standing in the hallway because apparently that meant I was either trying to ditch or get drugs.

Last month my mom and sister caught me smoking after I got some cigarettes from my dad’s employee. My mom explicitly told her not to tell anyone but she went and told my grandma. My grandma absolutely hates smoking so she took away my car and college fund (and I’m pretty sure she gave it to my sister).

Karma hit my sister because she went on a trip and came back with a pretty bad infection. Her doctor prescribed antibiotics and told her to take them immediately so she gave me her car keys and $40 for gas and meds and asked me to pick them up.

I said sure but I came back after the pharmacy closed for the weekend without meds. She screwed me over so I wanted to screw her over.

She couldn’t get a hold of her doctor to send meds to the pharmacy in the city and the pharmacy here was closed for 4 days so she ended up in the hospital for iv antibiotics.

My parents are staying out of it but my grandma is pissed and told my parents that either they kick me out or she cuts off all financial support. My parents are trying to compromise by grounding me and making me apologize but she’s still pissed.

Now I’m wondering if I’m the ass for not getting my sister meds after she screwed me out of a car and college fund.