Pretty sure she's gaslighting me about it. Started screaming at me bloody murder because I got irritated with her asking me questions every time I pressed play on the show I was watching. Yelled at me about what an ungrateful bitch and cunt I am and how I never do anything around the house despite the fact I was sitting in the living room that I cleaned and kept clean for the past few days while she's yelling at me from a kitchen that I also spotlessly cleaned a few days ago, haven't cooked in but once since, and is now completely trashed by her and my dad. 
Once I told her to stop instigating, she really flew off the handle and came at me with the knife she was holding while cutting onions. Kept giving her one word responses and she kept screaming and pointing the knife at me to punctuate her rage. As soon as I called her out for coming at me with a knife, "I was using it to cook you're crazy I just happened to have it in my hand you dumb bitch" 
Currently hiding in my bedroom so I don't get stabbed. 
And I wonder why I have BPD lol