How do I tell my aunt that I don't want to adopt her cat?

My aunt lives in a trailer park, and she let's her cat Roam around outside. He keeps getting in fights with another cat, and the park host says that my aunt has to get rid of the cat. I told her I'd think about taking the cat. She said that she'd break down and cry if I agreed to take the cat. That's why I feel bad about not wanting to Take the cat. She just texted me asking if im gonna take the cat. How do i tell her I don't want to?

How do I tell my aunt that I don't want to adopt her cat?
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