No, you're not being hard, I totally agree. I should be receiving my locks soon, and I'm going to tell my friend next time I see her that she's free to handle my snakes only when I supervise everything, from taking the snake out to putting it back.
And it wasn't even a lid... I can MAYBE see how it would be SOMEHOW POSSIBLE to incorrectly close/lock a lid if it didn't fit 100% or had some weird lockign thingy that was complicated... but they are sliding glass doors! You push on them till they stop moving. NOT complicated.
I do hope I'll find her. I'm pretty sure she's in the closet, so I just have to look. Still pissed off though. >