Hero fits pretty snugly into the classic archetype of the passionate young lover. She's young, beautiful, impulsive, and head-over-heels in love. Like many of her young lover colleagues, her all-consuming love also ends up being her undoing. When she discovers Leander's drowned body on the beach, she can't bear to live without him and commits suicide to be with him in death.
But when you start to unpack Hero's character a bit, you'll find a couple of interesting ironies.
(1) She's a priestess of Aphrodite, but when we start off the story she's also a virgin. Kind of odd, since many priestesses of the goddess of love included intercourse as part of the ritual worship of their goddess. So when Leander points out to Hero that he's surprised she's still a virgin, it might not just be a bad pick-up line. In the context of the time, the dude actually has a legitimate point.
(2) Hero is a worshipper of the love goddess, but it is love that ultimately destroys her. Ouch.
We definitely feel bad for our girl, but we have to ask: should she have been a little less hasty in falling for Leander and letting him swim across a straight to get to her? What do you think?