The Warden Timeline and Summary

We actually hear about the Warden long before we meet her, when Mr. Pendanski tells Stanley that the only real rule at Camp Green Lake is "Don't upset the Warden" (5.6)
The first time we lay eyes on her is when she comes to the dig site after X-Ray claims to have found the gold tube.
The Warden supervises the digging for the next week and a half, but she gets more and more grumpy as time passes.
Enter crazy, scary, creepy scene. In a meeting with Mr. Sir and Stanley, the Warden paints her nails with rattlesnake venom and scratches Mr. Sir on the face. Yeah.
The Warden is part of a lot more funny business, and eventually she watches and waits as Stanley and Zero are about to be eaten alive by yellow-spotted lizards.
When Stanley and Zero emerge from the hole (alive!), the Warden tries – and fails, big time – to claim the treasure.
In the book's final chapter, we find out that the Warden, desperate for money, had had to sell Camp Green Lake and its land. Huzzah!