This is really hard to write - I'm crying right now.
Big Eft died and it's totally my fault. Yesterday when I left I forgot to put the lid back on her tank after feeding her. When I got home I just stuck it on and didn't even think about it. This morning I didn't see her, but that wasn't so strange. I found her this afternoon, dried out and dead on the floor. I feel terrible because it was such a stupid mistake. I know she's just a newt, but she was my favorite if I had to choose a favorite.
So I guess this is another lesson to everyone about secure tank lids and how important they are.