Aitah for refusing to see or interact with my grandmother and aunt?

About 6 years ago my grandparents got 2 cats, given their ages there were a-lot of conversations about who would get what when they died. I was told i would be getting the cats. Cats are my special interest, i have a 13 yearold cat and an almost 2 yearold cat, both I’ve raised from kittens. Ive taken care of cats my entire life, 15 to be exact. That was one of the reasons i was getting them, the other reasons are i am very on top of the health of my cats, the cats wouldn’t have to travel, and that way my grandparents and aunt could still see them.

However i am now not getting them because my aunt convinced my dementia ridden grandmother i was lying.

My aunt spent my entire childhood making up stories about my mom to get her in trouble with my grandmother and the law. She would do this in retaliation to my mom setting boundaries such as: to not touch my hair (i hated my hair being touched as a kid), to not take photos of me (she and my grandmother faked photos to frame her for child abuse that was not happening at the time). My entire life i have been a pawn for them to use to hurt my mom for the smallest things. They would constantly lie to me and tell me weird out of character stories about my mom, around the age of 15-16 started challenging the stories because things weren’t adding up, the stories were never consistent and out of character, when i voiced this i was then deemed difficult, satanic (i dyed my hair red and black and like rock music, I’m also gay), and my mom “brainwashed me to agree with her” (not possible, im too stubborn), or “im a child i dont understand”.

Just over a month ago my grandfather had a stroke. My grandmother called my mom saying “your dad isnt making sense” my mom ended up calling them an ambulance to the hospital. She had the Elf (step dad) pick up me and drop me off at the hospital then get my aunt. Since my grandmother has dementia by the time we were at the hospital she didn’t remember what had happened, so my mom was telling the doctors the time framing of the stroke, when my aunt pipes up “it started two weeks ago” (??? Yeah idk, confused too) my mom ignored her so she kept pushing, eventually my mom snapped at her “L you don’t know what you’re talking about, they need accurate information, please be quiet”. They needed the information for the stroke medication because if it’s not administered in a certain time frame it doesn’t work.

After this my grandfather was put into an elderly care home, my grandmother called went back to the condo (55+ community) with my aunt (refused to leave, still is refusing to leave, more on that later) while there with her for the month my aunt convinced my grandmother that we were lying about the cats and they were going to S (lives several states away, also doesn’t want them). My aunt did this to spite my mother because of what happened in the hospital room.

My grandmother just got moved into the elderly home aswell. My aunt still isnt leaving the condo.

Im not getting anything from my grandparents, the only thing i was getting was the cats. Im not even getting my own things from them (Baby blankets, toys, a Minnie Mouse bed set) because A: they are already gone or B: my aunt stole them.

Im sick of everything being a game. Its always lies, manipulation, blackmail. Im tired of just being a thing used to hurt my mom. This didnt even hurt my mom, only me. Im not getting anything else when they die. As awful as they were in life, the memories and lessons i have from them shaped who i am, id still like something to hold onto, and cats were the only positive (Pawsitive) in all of it.

After all this i decided to go NC. Tired of being a game piece, tired of the lies, sick of not being a family. Some of my cousins think its too far. However my mom, other grandmother, Elf, my friends, my partner, all agree to cut them out.