I am helping them live a better life by looking so lovely.
You shall have your beauty stripped away.
Medusa tried to explain that she is making other's lives better by looking so lovely. But Athena stop her with frustration. Athena explains how Medusa's beauty does nothing for the poor, unskilled, and the hungry. So with that, Athena stripped her beauty away from Medusa.
Athena suddenly turned Medusa into a hideous monster. Her hair twisted up and turned into live snakes on her head, fighting. Athena also moved Medusa to live with the blind monsters, the gorgan sisters. She was sent there to the end of the world so none of the innocent people would look at her and get turned into stone.