<human>: When I was 18, I moved out of my dad's house to live with my grandparents. We had a long-haired black cat, and I couldn't bring her with me because of my grandmother's allergies to cats (especially long-haired ones.) She's been in my dad's "care" since then.

I don't visit very often because the state of the house in general is deplorable since my mother and I left. The cat is in awful condition. Her hair is almost completely gone, she's meowing incessantly, I feel like they don't feed her and she's got the worst case of fleas I've ever seen. My dad acts like a big animal activist, which is why I don't understand this situation...

I'm emotionally conflicted because I don't want to be the one to decide to end the cat's life. I can't afford vet bills, I can't house her, I don't know what to do or where to take her and it's ripping me apart from the inside. Her quality of life has to be terrible, but what do I know?

My dad has anger problems and our relationship is frequently on eggshells, but he's also my dad and I don't want law enforcement to get involved if they don't have to.

Can you give me a shortened version of the text?
<bot>: My dad is neglecting our cat and I need to stop it. What is the best course of action where no one will get arrested?