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.
Finnish Mythology Illustrated 