Here's some back-story on my currently, messed up family. My parents got divorced late in 2007, was an awesome divorce, they were both friends afterwards. I stayed with my father (a selfish man, but one who loves his kids), while my sister (a selfish person who cares about nothing as long as she gets her way) moved away with my mother.
Shortly after the split, my sister moves out from my mother's place (leaving my mother with a 1 year lease on a place that is far too large for one person). My sister moves in with her new boyfriend, but because he has a job where he is not getting enough hours, they both end up moving in with my mother. After a month my sister's boyfriend finally gets a job that is promising good hours and good pay, so they both move out. During this time my sister is receiving a monthly allowance, as long as she is working on graduating from highschool. Months later, my sister and her now fiance are looking to buy a house, but he has a horrible credit rating and can not get a mortgage. My mother, in love/stupidity, co-signs so they can get a place.
During this time my father invites his manipulative mother to come live with us (she is a horrible person who once explained to me that my father isn't really her son, because he is adopted). My grandmother agrees to pay the mortgage, so in my father's infinite wisdom, he proceeds to buy a large diesel truck. This now means that my grandmother can never leave, because my father can't afford everything without her. My grandmother slowly, but surely gets paranoid thoughts into my father's head, getting him to alienate my mother and sister. I slowly grow to hate my grandmother.
A few months later, I am visiting my mother for the Christmas holiday. I have brought her dog with me, whom I have grown very attached to. My mother also has a dog that she got stuck with because of my sister though, so there is an agreement that the dog can come back if it doesn't work out. While I am visiting, it turns out my sister hasn't been doing anything to graduate highschool and has been lying to keep the allowance. My mother then proceeds to tell my sister that she has one more semester, involving progress reports from the school, if she messes up this time, all money gets cut-off.
So today my mother calls me. Turns out she is moving in with my sister and her fiance because he has been working minimal hours and staying at home playing WoW, which means they can no longer afford to pay the mortgage and their great debt. This place does not allow dogs, so my mother had to get rid of both of them. Apparently she called my father and asked if he would take the one dog that I care about back, he says no. My mother had to give the dogs away to new families and now has an undying hatred for my father
I confront my father about this, specifically the fact that he never told me and lied to my mother. I am pretty upset about losing the dog I had grown so close to. My father tells me I shouldn't talk with my mother or my sister because all they do is complain about nothing and that my mother is trying to turn me against him. He then proceeds to go hide upstairs and talk about all this with my grandmother.
I mean, I love my mother, I know she got herself into the position she is in, but it is only because her trust has been betrayed. I am very angry with my sister and her fiance and am not sure I ever want to speak with either of them again. I am also angry with my father, for letting my grandmother slowly turn him against everyone. My father and I were awesome friends before my grandmother got here and I am afraid I am losing that friend and possibly my father. I mostly needed somewhere to vent, but am hoping maybe I can get some advice on how to deal with all this.
Thanks in advance for any advice (I realize this a long post, so thank you for reading it as well).