Located on the small island on the shout-eastern part of the map (880,25).
She has a fast AoE stun, and can also summon wisp-like adds called Starved Stepchild of Futakuchi-onna.
This rare spawn has a placeholder and they all have a 90-min respawn timer.
3 hour respawn, but i got a placeholder named “ravening shade.” obviously no achievement for killing that
Yup placeholder is ravening shade. got her 4 times now.
Spawntimer is 1.5 hours now.
https://en.wikipedia.org/wiki/Futakuchi-onna (Japanese Legend)