"...Do I have to make the promise to you," she wonders, "or do I just have to make it?"
"It'd be easier to kill him right away if I could do it when you're not around. Or maybe when he's sleeping," she says.
"That makes sense. Maybe even I could kill him in his sleep. But I'd have a harder job timing it than you would, considering."
"Do you think you can, now? If it doesn't stick - if you don't mean it right - and he hears you -"
"I could - if I know when you're going to do it - stand in view of his window?" Etty suggests slowly. "...Or you could come in while I'm. There."
"I don't know if I could see you from his window," she says. "And I don't know how to safely check."
"I can look out the window while I'm there, see what parts of the outside it frames," says Etty. "...But your eyes wouldn't be adjusted to moonlight, would they."
"So you might not be able to see me even if I stood in just the right place."
"So - next time he takes me - if you think you can - then, you can come in after. He always falls asleep when he's through with me," shivers Etty.
"Okay," she says. "If I think I can. I will. And then I won't have to worry about if it'll work with you not there."