What should i do now?

my mother and i haven't been getting along for the last 4 years because we always are getting in fights and cant stand each other.last year i moved in with my grandfather who i have known my entire life and love very much. i still would occasionally go stay the night at my mothers but one day she randomly started slapping and yelling at me!from that point on i decided to flat out not speak to her.my sister and grandfather were upset with me by that so i decided to just nod and say "yeah" or "no" if she asked a question.i went to visit my father in texas but when i got back my grandfather went to iowa for his high school reunion and i was staying at his house until he returned.one morning my mother called and said "ur moving back in!"i didn't go willingly but i packed my things and came to her house where its practically a dump with lots of animals running and i have allergies!i got in an argument with my mother and she said that my grandfather says I'm lazy and he just wants me to MOVE to texas!he had always been there for me and i always try to be the best granddaughter i can be but when i heard that it ripped my heart out!i know she wasn't lying because my sister said he same thing and she wouldn't lie about something so serious.now I'm just waiting 4 the next two days so i can confront him about it but I'm afraid he will just deny it.now i feel completely alone and that no person really cares about me.