I should start by saying I am one of three sisters. Throughout my childhood, I never felt we were treated equally - my dad was much harsher with me, and it didn't help that I was an anxious child (and now and anxious adult). He did things that bordered on emotional abuse, while blaming me for his own stress and depression.
My grandparents died in my early teens, and as a result my dad became close to his aunt, who had no family of her own. He talked to her everyday on the phone, and I heard the awful things he would say about me. He said I was a little bitch, that it was my fault he was on antidepressants etc etc. His aunt said he should throw me out - I was about 14 at the time. I know I was a very anxious child, but I didn't commit crimes, smoke, drink, get violent, or anything like that. My crime was getting very worried and upset about things such as bullying at school, and he couldn't handle it and support me. He made me out to be a terrible person. Once I picked the phone up while he was talking about me and said it wasn't true, and his aunt shouted down the phone at me saying I was ruining my dad's life, that I was a little shit etc.
His aunt invited my sisters to stay with her (she lives on the other side of the country) many times over the years, but said she didn't want me there. As a result, they all have a relationship with her. She has bought them cars, paid for their studying, holidays, everything. She has also promised they £50k each in her will, and told them I will be getting nothing due to my behaviour. My dad will be getting a huge amount of money, which she's slowly transferring to him already.
I rarely speak to my dad now after how he treated me, as I'm sure it's contributed to my own mental health problems, but he still slags me off to her from what I hear. He sends me messages saying it's my own fault my sisters will have house deposits while I won't, yet when I challenge him he says I'm vulgar to talk about money.