Do you think this is unfair?

i have a younger sister who is ten. She is on the higher end of the autistic spectrum and has recently been moved to a full time residential. Anyway since i was old enough to talk i have gone to my grans with my sister until 9 o Clock so my mum and dad could go to the pub for a few hours. Before my sisters recent placement she used to stay at a temporary residential from monday to thursday. Because of this my parents decided to start going to the pub on fridays and on wednesdays where i would also go to my grans. Now this was fine but when my sister left my parents also broke up for personal reasons. So now my dad lives at my grans and grandads (his parents) and my mum has decided to go to the pub alot more. I visit my other grandad on thursday so while im out she goes to the pub then and she still goes on the regular friday and if i decide to go out with my Friends she will go then and then she will go normally on a wednesday or monday where she will leave me at home. She was a couple of years ago depressed because of all the stress of my sister and started drinking and went to alcoholic meetings because she was scared she was on the verge of becoming a alcoholic but she wasn't. From then on she didn't like my dad drinking in the house but all of a sudden she is going out to the pub all the time and is drinking lots at home as well. She never really gets drunk but it reminds me of how she was. She has also started forcing me to stay at my grans so she can come home at wot ever time she likes and when i complain she says I WANT TO HAVE A LIFE AND I DESERVE TO GO TO THE PUB all my friends mums don't go to the pub almost every day of the week and they have lives. Having a life doesn't meen you go to the pub all the time. Also she told my gran that i ASKED to stay with her and i told her that i was forced she shouted at me for telling hewer the truth!! Me and my moms relationship has never been good and shes really fussy and annoys me all the time and i don't want to hate her but i think i do. Anyway the reasons why are a whole new kettle of fish and i think i have already typed you an essay. This is only a small chunk of why i think i hate my mum and i want to stay with my dad but please help!!