How old was Medusa when the curse was put on her?

Medusa was said to be a beautiful young woman when she was cursed by Athena, but the specific age at which this occurred is not clearly defined in mythology. Some interpretations suggest she was a young adult, likely in her late teens or early twenties. The curse transformed her into a Gorgon, making her hair turn into snakes and giving her the ability to turn anyone who looked at her into stone.