Place this clip after your establishing shot and before the scare hits. Start with FNaF 2 Hallway Ambience underneath the visuals, bring this wail in over the top, then follow it with Phasmophobia Ghost Attack for the payoff moment in a three-part horror sequence.
About this sound
This clip is a short, drawn-out wail in the voice of a weeping woman, lasting about five seconds with no words, just rising crying. It feels mournful and unsettling, turning a quiet moment tense in a way that lingers. It comes from La Llorona, the weeping woman of Latin American folklore whose cry signals sorrow and danger.