USB Killer Fries Snooping Friend’s PC

Am I the a-hole for my USB killer frying my friend’s PC after she snooped in my bag?

I 20F, my friend is 21F. I always carry a USB killer in my backpack.

It looks like any other thumb drive except I stuck a tiny devil face sticker on it so

I know it’s the dangerous one. I keep it on me because I still live at home and

my parents are super nosy; if I ever left it on my desk they’d definitely pick it up and plug

it into their laptop to “see what it is.” Yesterday I had to leave campus in a rush and asked

my friend to watch my bag for a bit. I ended up not having time to come back so I just texted

her to take it home and I’d grab it today. She said cool. She gets home,