Before I begin, I'd like to quickly run over the definition of a goddess.
A goddess is a female deity
Oya is one of the most powerful goddesses in Africa and a force to be reckoned with in Nigeria. She is believed to be the goddess of winds and storms and of violent deaths. A fierce woman, the literal name of Oya means "She tore".
Oya is the queen of the River Niger, and the mother of nine. She is a warrior and an unbeatable force.
Oya is the only Orisha that has power over the dead. Since she is a compassionate Orisha, she has allowed many dying children to live as a gift to their parents. Cemeteries are known as "ile yansan", Oya's house. Anyone who uses dead bodies or parts of dead bodies in their ceremonies, must render payment and homage to Oya.
Whenever there is a haunting, Oya is summoned to dismiss the spirit. Sacrifices must be made to ensure that she takes an interest in the matter.
Oya is the Orisha of tornadoes and twisting storms, hurricanes and gales. The four winds are dominated by Elegua, Orunmila, Obatala and Oya.
Oya has such a terrible face that anyone looking on it will be stricken mad or blind. In ceremonies where Oya descends, no one looks upon her. When she possesses someone, she puts on a red crepe dress or a flowered dress and weaves multicolored ribbons around her head. She only dances warrior dances. When her "children" enter trance, some of them can handle live coals with their bare hands.
Oya is feared goddess that no one names their child after. Probably because she is the only Yoruba female goddess of the dead and she hangs around graves a lot. That must be bad for her child naming PR.