How do I fix this cat?

My cat refuses to die.
I'm about to accelerate that process on our indoor cat. It has a cat bed but refuses to use it....instead if you put any kind of clothing down she lays on it. Ruined my son's $30 Grinch sweater yesterday before he even got to wear it to school. It was folded on a chair while I gave him a shower and we came out to find the cat sleeping on it. Lifted cat gently but she still stuck a claw in it. By the time he got home it had unraveled into a hole. Hate that cat.

I "rescued" a cat when he was very young. He ended up being a big, cool indoor cat, and smacked my cocky great Dane around for fun. Fast forward 10 years he decides he wants to be an outside cat while the weather is nice, and I haven't seen him since.

Turns out he just saw animals outside at night that he wanted to attack. One of my cameras caught his final fight with a ~250lb bear.....bears are freaking fast

EDIT: Realized I never answered the question, introduce the cat to a bear