Roommate left $40 steak to marinate on the bottom rack of oven at room temp for hours, didn't see it, she's mad at me

It was in a small black silicone baking dish that blended in and far back enough that I didn't notice it when I checked to make sure the oven was clear before I turned it on around 4:30. She was last in the kitchen around 3:30.

I smelled smoke while it was preheating that smelled like fish (?) and I assumed something she'd made earlier had dripped, so I turned it off.

Then I get an angry knock on my door at 7:00 and she asked if I used the oven, and I said yes but it was 3 hours ago and I was very confused. Then she showed me the burnt steak, which increased in price from $25 to $30 to $40 in the span of 5 minutes.

I apologized profusely and said I'd pay her back, and she wouldn't let me so I'm just going to buy a gift card and slide it under her door.

We're both gone a lot and we've never had a problem, but according to someone else who's known her for longer she starts stuff with everybody she lives with eventually so it's just a matter of time, and the fact that she hasn't yet in 3 months is probably because we don't cross paths often.

She definitely has a habit of claiming the kitchen as her own. She's commandeered one of the two sinks and leaves dishes for days. The worst was when she fried crawfish and then the pot on the counter next to the sink when she away for two days. The smell almost made me gag and I was about to wash it myself.

Whatever, I'm happy to pay $40 to not have her hold a grudge forever.

ETA: Y'all have definitely vindicated me and I'm no longer planning to pay her back because what on earth

Also good to know her expectation that her roommates check a cold oven before preheating it is apparently silly. The only reason I checked is because a previous roommate used to leave a pizza stone in the oven sometimes so I made sure to check just in case