About the time Christianity left the Roman Empire, in such a case, Wonder Woman would then be the daughter of Jupiter, as Rome was the predominant civilization back then. Still if were talking about a young Wonder Woman it would have to be either in the late Roman Empire or the Dark Ages, so Jupiter/Zeus would have had to be fooling around more recently with Hyppolyta if Wonder Woman is to be a young girl just entering school. If she is an immortal then she'll stay a young adult as soon as she grows up and could be over a thousand years old and not look it. Another thing if Zeus/Jupiter is her father from an affair with Hyppolyta, that makes Hera/Juno her enemy in the same way it did for Hercules. Hera/Juno is famous for her jealosy and taking it out on the offspring of Zeus/Jupiter's affairs.