Issues with my new step momc

My dad recently got married. So his wife moved in she has been nice to me but won’t leave me alone. Like she treats me like a child. I give you a example I get home from work at petrol garage so I get home late. She moans that I get home so late and I should find a different job. Also she is always asking who I am on the phone to. She looks through my drawers. I have tried speaking to her but she doesn’t listen. Not sure what to do