Myrrha is a figure of Greek mythology who was the daughter of either King Theias of Assyria or King Cinyras of Cyprus. In either case, she fell in love with her father. With the help of her servant, she started to disguise herself as a concubine, and, under the cover of night, had incest with her father. But one night Myrrha stayed with him for too long, and in the light of day, the father recognized his daughter. Enraged, he tried to kill her, but she ran and was turned into a myrrh tree by a god who was either feeling compassionate or bored. She then gave birth to Adonis from her trunk. Adonis, in case you were wondering, was a youth so beautiful he made Aphrodite fall in love with him. Then a boar killed him and his blood was turned into anemones by Aphrodite for no apparent reason.

Myrrha only did what she did because…

She had incest with her father by disguising herself as a high-class whore. I'd say the case is fairly cut and dry.

But she only did so because Aphrodite filled her with uncontrollable lust.

Well, since there's only one God, and he most certainly wouldn't do something like that, the lust must have come from within. Of course, that begs the question of why he turned her into a tree…

Come to think of it, what exactly is the status of the Ancient Greek pantheon's validity in all this?

I actually don't think even the original Dante had a clear answer to that.

Huh. Well, whatever the case, Myrrha used deception without feeling any guilt, so she deserves to be in Hell. Case closed.