Wow when I first saw this thread I didn't think it would be a girl, no offence, but I would have thought it would have been a guy, as teenage guys tend to do stupid things like this.
But wow, wtf is her goddamn problem? Settle down and think for a second, you're harming a living thing, how would you feel if someone stuck you in an oven, 200 degrees and watched you burn? "Oh yeah, it was a joke haha" they would say. This girl is so screwed up in the head, she needs to get help.
I love kittens, and I could NEVER EVER see myself even harming one. That's just like, sin. Just no. Hope you rot in hell for that Cherry.