A dakini (Sanskrit: "sky dancer") is a Tantric priestess of ancient India who "carried the souls of the dead to the sky". This Buddhist figure is particularly upheld in Tibetan Buddhism. The dakini is a female being of generally volatile temperament, who acts as a muse for spiritual practice. Dakinis can be likened to elves, angels, or other such supernatural beings, and are symbolically representative of testing one's awareness and adherence to Buddhist tantric sadhana.

According to legend, members of the Indian royal castes and the wealthy nobility brought their deceased to the far North to visit the Shrine of the Dakini (located at the foothills of the Himalaya). Other legends mention a Tibetan myth which says dakini first appeared in a remote area "pure of man".

Dakini are timeless, inorganic, immortal, non-human beings who have co-existed since the very beginning with the Spiritual Energy. In some New Age belief systems, they are angelic. This New Age paradigm differs from that of the Judeo-Christian by not insisting on angels being bona fide servants of God.

http://theunexplainedmysteries.com/Dakini-Vidya.html