What truly sucks is mentally i was doing so well, physically I'm losing weight and feeling great, because my anxiety has…

What truly sucks is mentally i was doing so well, physically I'm losing weight and feeling great, because my anxiety has been good. Then my parents inform me they're allowing my sister to come back home with her dog whom she never takes care of leaves for hours on end. And now I'm faced with figuring out about moving because I can not deal with my drug addiction sister. I did it for the past 5 months I'm not going back there again. All I think about is dishes going missing again, towels hoarded up in her room with pee and poop from her dog because she's a crap owner. My parents saying she can come back but not the dog and now the dog can. I'm beyond hurt, and disappointed about how they added my brother and I in a group text to tell us. To top it off they live three hours away now so basically we get to deal with her ourselves. Great parents I have. Im emotionally drained! All they do is give in to her she is turning 21 this month she is grown. She's a druggy she knows how to manipulate so that's cool. Glad she is more important than my child their grandchild!!!! We are only here until we find our own place i appreciate them letting us live here, but they pushed me to far this time. Our relationship will be strained after this. Idk how it won't with them choosing her and her dog over their two kids who actually have it together!