Mental stress. Issue and she compare.

I am 34 years old. I am finding lots of stress due to wife's behaviour. Due to which I don't get proper sleep, I get hyper, I can't concentrate on my work . She is working woman but she doesn't want to spend a single expenses on house rent, vegetables , maid etc. She spends only in buying clothes and her personal things. I am fine with that, but she have issue if I take care of my parents and spend money for their medicines. I got a car and I hardly remove. if me and wife go out as we can manage by bike, but since my mom has knee pain and she is 68 years of age and never in life sat on bike so I remove car every time when I and mom go out on that too she has issue and she compare. My monthly expenses are 42 k excluding my parents medicine and my shopping on clothes. My net salary is 49 k. She is mentally harassing by suddenly not cooking food or tea, or by telling to remove parents from here who are 70+ Age, yelling and shouting in bed room. Pls help I m mentally down