Is OTHER wrong in the post ? POST : I’ve known my step mother (referred to as SM) for 4 years. In that time my reputation of her has gone from indifferent to a perpetual disliking and avoidance. Whenever my dad got remarried to my now SM I tried to be friendly, making casual remarks I thought were funny, playing off mistakes I made as being a goof, and looking past her mistakes. Despite that, SM always had a seemingly bias opinion of my brother and I. She would crack her own “jokes” daily (which consisted of mocking my brother and I’s weaknesses). Whenever my brother and I would voice our displeasure, she would get incredibly defensive and reply, “I was only joking”, “It was just sarcasm!” Sometimes the jokes wouldn’t even be about our weaknesses, but just plain out lies about our hobbies, habits, etc. Recently SM has even been testing us. Misplacing items so that when we don’t find them, she can say “Just goes to prove how imperceptive/lazy you are”, “Just shows how much men rely on women”. The house has felt very women dominated and man demeaning ever since she got here. Because of SM, I now have a lack of confidence in my own skills like if I’m perceptive or not, lazy or not. 
    I ask because I want to know if I’m being to selfish about this. TBH, she does do things for us like cook, clean, vacuum, etc. for us. 
Am I being too negative? Sensitive? AITA?
