Dolce,
Stay away from those idiots! (Your aunt and uncle.)
I feel your pain.
There's an old biddy who was married to one of my late uncles who always treated me like crap. My mother would just sit there and let her do it. She only picked on me. Once, when I was 15 years old, Aunt Biddy started complaining that I was too old to be calling my mother "Mama." My older sister was TWO YEARS older than me and Aunt Biddy never said one word about her. That woman just wanted to pick on ME.
My mother's family were wimpy like that, and my uncle that was married to this woman was totally henpecked. This woman could act all nicey-nice when everything went HER way; when it didn't, her horns came out.
I believe she always hated me. She doesn't like other women at all. I haven't seen her since my mother's funeral, and it hasn't been long enough.
"tells me that my uncle is family and deserves my respect. " Your dad is wrong; he doesn't deserve your respect.
Take care of yourself; you deserve better than this.