Stheno long forgotten to lore, she is not to be confused with her sisters Medusa or Euryale. For Stheno was born in the caverns beneath Mount Olympus and like Euryale is immortal. However Medusa was mortal and when Perseus took her life, Stheno tried to kill him. Unsuccessful, she began to hunt and kill all men and possibly continues today… Vengeance is hers as she has killed more men then her sisters Medusa and Euryale combined.
https://fineartamerica.com/featured/stheno-jeremy-martinson.html?newartwork=true
Ponies Blog 