Pandora of Athens — Barry Denenberg

Pandora is trapped in the restrictive roles laid out for Greek girls, and, to her despair, her father has negotiated her engagement to a man more than twice her age. Now Pandora waits with dread for her fourteenth birthday, when she will be old enough to marry. But one day, when Pandora goes to fetch water, she meets Socrates, the Wise One, and what he tells her changes her life.