While Levi spends part of the night at the community hall, his patrols don't cease after the sun goes down. The night was probably more dangerous than the day with wolves around, anyway. He spots Crozier as he passes the graveyard and pauses for a moment before moving towards the other man.

"Did you know her?" He assumes La'an must be why the man is here. People didn't often hang out in the graveyard, especially at night.