My bloody sister. I can't F'g do anything right. We're looking after our aunt at the moment. If I help cook meal I'm in the way. If I don't help I'm being lazy.
She can't be told anything (eg aunt likes X or Y ( I know this because I do 90% of the cooking). It's all about some stupid ego (I'm right/you're wrong) crap with my sister. She doesn't listen to a word I say. She always knows best.
Apologies as I know I'm just venting, but sometimes we need to vent :(