Siroc is the Leader of the Wind Tribe, and resides in the Cloud Tops along with the rest of her tribe.

When Link meets her, she tells him the story of the tribe and how they came to the Cloud Tops, as well as their ability to see all that goes on in the land of Hyrule.

Knowing that Link’s intentions are sincere, she grants him access to the Palace of Winds so that he can retrieve the Wind Element.