Still grieving over my mom who passed last year but sister told me to get over it since she's already deceased when I was acting iffy towards my dad's girlfriend of a few months during a road trip. I'm happy for my dad, and his girlfriend is a nice woman but I don't want to be associated with them together as a couple, and her potentially becoming my stepmom just worsens these feelings. He never did many things for my mom and she never asked anything from him since she knew he worked hard and I felt as though he barely reciprocated her love for him when he fell in love with her first and didn't let her visit her own family much (Hated my uncles on the maternal side though so I can understand why, liked aunts tho) so I'm just feeling anger towards him. I honestly hate myself as well because after I was born my mom got fatter and she became insecure of her body, I regret not hugging and telling her I loved her more and I feel like I'm a burden because of my idiocy + incompetence.