My roommate used my gas stove without permission pls help

She used my stoke to cook smt now I didn't see her but I know she did and I'm sure can't explain loh story but I know she did we are not even close we go to same college and class sometimes talk but still we're not friends. Or close to each other now what to do I can confront bcz I didn't see with my own eyes what to do I want o take revenge soo baddd I even have an idea but my morals are saying no😓 pls help now I will lock my stove.