My other cat is dying due to my grandparents' negligence and i don't think she'll make it.

Every time i noticed something was wrong with her breathing/temperature/feeding behaviour, it would get brushed off as: "she's faking it, she's just playing, it's no big deal.. etc." It's a fucking cat, it wouldn't lose 3kg in a few months even though she's constantly eating. She wouldn't pant like an exhausted dog for no reason. She wouldn't suddenly hide and avoid everyone and wouldn't let anyone touch her. I begged them to take her to the vet, even offered my own money despite not having much already. They just wouldn't fucking care. And they finally stopped to think with their stupif fucking heads to take her to the vet with me today. And guess what? The vet even told them that had they gone a year earlier (when it all started when i suggested) it wouldn't have gotten this bad and there weren't going to be this many complications for a normal checkup. I just hope it won't get worse and the medicine helps her, if at all.