I need some advice on how to get revenge on my toxic ass family. 

Backstory: my mom was in rehab from February 2019 to july 2019. She had emergency surgery in june, she was out of the rehab for 1 week in the hospital. They discharged her knowing she’d be homeless for being in the hospital. My family said straight up from the start that we CANNOT stay there. Well guess where we ended up because they wouldnt let us on the street. Since we’ve been there, (theres 8 other people in the house besides me and my mom) non stop we have been gaslighted, accused, whispered about, and basically just a nuisance. We became basically their house made. Dishes, counters, sweeping daily. I know that it isnt hard. Problem is My cousins on one side are spoiled brats and never do their own dishes. My cousin on the other side did some shit to me years ago sexually, in my opinion is a narcissistic piece of shit. He steals our things. (Cant tell his parents tho 👌🏻🙃) Their cats piss on our clothes bc they dont do the litter nearly enough. We feed their cats daily. We arent even allowed to say that to them though bc then we’ll be screamed at and insulted. And they LOVE to make passive agressive facebook posts. And after 6 months of being there theyre kicking us out. For NO reason there hasnt been any problems lately and the message just said that we’ve been there too long. After all the hell they put us through the last 6 months, literally i was more suicidal then ive ever been (thats saying something). So im done. I won’t let this go lightly and i will not leave that place without putting my mark. 

I appreciate positivity but please dont do the “happiness is the best revenge” stuff like i cant move on from this. I need to “go out with a bang” or I’ll always have it looming over my head. 

Any suggestions on revenge? Particularly their home.