The Daughter of Tuoni (Death) acts as a gatekeeper between the world of the living and Tuonela, land of the dead.
Read more about Daughter of Death and other Finnish goddesses in Women of Might and Magic: Witch Queens, Deities of Death and Nature Goddesses in Finnish Mythology available on Amazon
Read about Finnish gods and goddesses of death in The Finnish Book of the Dead: Gods, Spirits and Creatures of the Underworld in Finnish Mythology and Folklore by Tiina Porthan and Tero Porthan, the first ever illustrated guide to Tuonela, the Finnish land of the dead.