This was my concept for a challenge on ConceptArt.Org. In my interpretation Medusa has evolved beyond the curse of Athena:

In cursing Medusa, Athena's plans backfired. The goddess did indeed isolate her from all human contact, but Poseiden, being a god still saw the woman that he desired and he continued to"visit" her. The only thing that saved him from her curse was his divine essence. Over the centuries Medusa's power fed upon her lovers divinity untill one day he was finally overcome. As he turned to brittle, ancient stone Medusa realized that his power and her curse had made her a goddess and she set about to confront Athena and force her to meet her gaze. She bears a scepter in the shape of a trident in honor of her lover.

This piece has been accepted and will be published in Expose' 6.