Invidia

Invidia is a personification of envy, often envisioned as a woman, though it can also simply be used as a term for the emotion (without the personification aspect): in medieval times Invidia was considered one of the Seven Deadly Sins and was drawn as a woman with a serpent coiled round her breast and biting her heart, "to signify her self-devouring bitterness; she also raises one hand to her mouth to show she cares only for herself"