Hi Jennifer
Two weeks ago, I was fortunate enough to be called into the doctors consultation room when my 80 year old mother who has lived with schizophrenia for 45 years was with her doctor. I had never imagined the horror she goes through because of this illness. Like you I used to get angry with her when at times the medicine was not effective and she started doing funny things.
Imagine seeing people or monsters right infront of you wanting to kill you and you have to bang against doors and walls to run away from them. Or people making all sorts of terrifying noises in your head and you want them out. It's a terrible way to live knowing that every night when others go to bed, you have to fight demons. Your sister also also wants reprieve from this torment and she wants a normal life just like you but her illness has no mercy and does not give her the relief she yearns.
So I appeal to you, just like the good doctor has said, get your sister help first because she cant help herself. You can help yourself cos you are normal and can articulate your frustrations and worries. She suffers in silence as most SZ people do. Once you have her sorted out, your life will be back to normal too and you will enjoy each other's company. Make time for yourself in the meantime and take 30minutes a day to walk somewhere or sit alone in a park to revitalise yourself. Good luck dear.