talk to your dad about how she treats you and seek is advice of what to do to get things to change. are you just mad at her cuz you think she is trying to act like she is you mother. you could wait till things are Mellow between you and her and be truthful and try not to be disrespectful and tell her how you feel write things down so you don't get sidetracked or get into an. area you don't want go in. tell her that you don't want to live with the things you are dealing with because your trying to make things work out as best as you can
Where's your dad? Talk with him. Tell him you have issues and ask him to help you and your step mom have a better relationship. Demand respect but give it in return. Never say you aren't my real mom. Nobody gives a sh*t.