How do you get along

I'm living with my parents I help clean cook meals pay and a relative of my parents is staying here and since day one they wanted to kick me out my mom has told me daughter this is your house and has told me I take good care of the home thank you she values appreciate me.

The relative doesn't like adults living with there parents she has command me to sit in the back seat of the car so she can sit in the front she remove my hand from the passenger side of the car and pushed me with her body and told me to sit in the back of the car while my mom was driving and she feels upset sitting in the back seat she starts to get aggressive and starts saying adults should move out parents house she's sixty and acting like a teenager and I don't know what to do

I feel so bad I feel like moving out but it will make my parents cry and who will take care of them and my parents. the doctor said any stress can cause heart attack since she is here my mom has high blood pressure and I'm getting sick myself from the stress.

I don't know how to live with a woman who doesn't want me to live here she wants this to be her house she wants to be the boss she wants to command around the house acts like she owns the house, she wants me to leave, treats me rude, when I am Cooking she gets in the way instead of waiting until I leave, she looks at me angry and the truth has come out she never wanted me here she is jealous of me and it's coming out my grandmother begged my parents for her to come here because she was making my grandmother sick and her relative cannot tolerate this bad behavior so now we are living with the devil.

How do I live with this woman she is so angry hateful she has whispers why don't you kill yourself towards me and has this negativity for me and my mom feels like she doesn't know what to do

This is all challenging I feel so spiritual weak like crying I feel like this person is making me collapse and damage the whole family the whole house keep our family in your prayers

What would you do for this situation what could I say to this person what can I pray to God how can I get help