Toxic sister who thinks she is betterWatch
Siblings will be a pain; they have been and it's their job to be but not to the extent that you feel personally attacked. I understand you're on the bad end of the stick, but it might be worth having a chat with her to just say that you don't like the things she's doing. I'm sure you're an amazing person, and don't let anybody, family or otherwise, try and put you down about it. I too can be overly sensitive at times, but it might be worth trying to find a friend to whom you can just chat when this sort of thing happens because I know when I'm in a mood, talking about it makes things seem lighter, and a week later, I fail to even remember what I was annoyed about.
Hope things get better soon <3
My advise is to just distance yourself and have your own space. Do you!