Is Medusa a god demigod or mortal?

Medusa is considered a mortal in Greek mythology. She is one of the Gorgon sisters, originally a beautiful woman who was transformed into a monster by the goddess Athena as punishment. Unlike demigods or gods, Medusa does not possess divine lineage or powers inherent to deities; instead, she is a tragic figure cursed with the ability to turn anyone who looks at her into stone.