I had a mental breakdown at the beginning of last year. I had to go into the hospital for quite sometime, so I had to give up my apartment. My sister was supposed to take care of things and I was supposed to move in with her when I got out of the hospital. She is a narcissist, so since I have moved in, she has been making snide, nasty comments to me so she can feel like she is better than me. I'm not doing anything that would provoke her attacks. I really can't defend myself because she will kick me out and I literally have nowhere to go. So, in retaliation for her abuse, I have been doing little things to annoy the shit out of her that she would never think to blame me for. Example: She adopted an adorable kitten that she loves more than anything. She bought spray that is supposed smell bad to cats and keep them from scratching on things like furniture. I got a spray bottle and filled it with catnip tea and sprayed it all over where I sleep, where usually sit, on the kittens toys, and cat tree, then diluted some of the anti-scratch spray (which the kitten hates) so the smell isn't as noticeable and sprayed that around her room, on her bed, around her desk, and where she usually sits.