Puzzle? Cela never really did puzzles. It was annoying, always trying to figure out the exact way to think about it. Always either too real, or too abstract, never got it right. Here? this puzzle hardly made sense.
13 nights? didn't ring a bell really, one night less than a week?
1 yoma? well that was obvious, it was standing right in front of her
7 years? her village was attacked, wait, did that take 13 nights? could have, it didn't happen at once
2 humans? well there was her, and... her father?
and a betrayal... so who was betrayed then? It had always seemed straight forward, yoma attack people and kill them, so the village got attacked. Some riddle, shouldn't it be obvious once you know the answer to something like that? There had to be something she wasn't seeing. She shook her head, looking down. But what the hell was it.