I might have to rehome my Doberman puppy and I’m shattered

Hello ^^ I’m 19 and for context I live with my grandparents who hate bigger dogs (why they’d get a Doberman don’t ask me) and unfortunately today is my breaking point. Ivory my beautiful 8 month old Doberman is an albino is and that’s very important to remember what caused my breaking point. My grandparents have always disliked ivory especially my grandma. They loved ivory as a puppy cus she was small but ofc that can’t stick forever and she’s grown now.y grandpa says often how much she hates ivory and wants to get rid of her and my grandpa just ignores her. I’ve tried explaining to them why she does the thing she does and it goes one ear and out the other. One thing they said that got on my nerves was threatening to lock her outside in the California heat. My breaking point came today when my grandpa (who’s literally addicted to weed) locked ivory outside in the 90 degree heat cus he didn’t close his door and put away his vapes and weed. All ivory did was take his vape and now it’s lost idk where it is either but he locked her outside after I told him two nights ago that it can kill her. I’m exhausted of trying to get them to like ivory and I just can’t take this anymore. I’m sitting in the bathroom with ivory having some form of attack I can’t breath and it feels like my throat is closing. I’m so tired and I don’t wanna let my beautiful girl go but it isn’t in her best interest to live here. I’m so lost. I’m shattered I hate it here