"...Do snakes sleep?"

"I think the one that bit me was sleeping. And they don't have beds," Malen says dubiously. "It won't be something obvious. Maybe something not alive?"

"Something dead then? But the ghosts talk..."

Kenet and Emen start muttering 'bed' to themselves. "Lake bed, death bed, river bed, bedbug," Kenet lists.

"What's a death bed?"

"Uh. The place where you die, I think."

"So, the boiling lake, drake jaws, the valley of thorns..."

"Bodies have legs and don't run though, so I don't think it works. Lakes don't run, bugs have legs, rivers run?"

"Rivers have mouths!" Hazel realises. "That's where the pain-spiders have their nests."

"It's a river!" Malen declares.

"Good!" Sophia says, clapping get hands. "Now: a red jewel in green nest am I. Those who take me die. Those who use me live. What am I?"

"Easy," says Hazel. "Poison berries. That got Dimestria once."

"You guys are doing well! Hm. I cannot be seen, cannot be felt, cannot be heard, cannot be smelt. I lie behind stars and under hill, and empty holes I fill. I come first and follow after, end life, kill laughter. What am I?"

"Death?"

"Nope!" she sing-songs. "Two more guesses!"

"I'm guessing she doesn't mean the moles." 

"It's behind stars. Probably either a color or the sky, and the sky isn't under a hill. I don't think."

"A really quiet bird?"

"You can see birds. And colors."

"I think there's an invisible monster in our garden."

"Can you touch it? Is it behind stars? I think this's a trick like the river one. I don't think it's a thing."

"Night time?"

That seems to give Kenet an idea. "Not nighttime, but what's in nighttime! Darkness!"

"Exactly! Congradulations, you have passed my test! Which of you wishes to enter my realm?"

"I think I'd like to. And that's good that worked, I was gonna guess 'the goddess Rune' next and she's a bit of a stretch..."