I do agree that the use of Hermes as a go-between seems natural enough, but it could stand to be a little less infodumpy and a little more naturally conversational. Also, I'm not sure if I'm following this right, but the gods aren't "myths" in the sense of being somehow false. They do feature in human mythology; human perception of them is affected by that, and they themselves seem to have adopted some of it (for example, Hermes self-identifying as Hermes,) but they predate the sun-change by a very, very long time. (You'll recall, for example, that Selene remembers back to the birth of the actual Moon.)
(Though the incarnated gods - Selene and Artemis, for example - did get their current forms through that, but even then it's questionable whether that's cause-and-effect in the standard mortal understanding, or simply that this is the intersection of two particular lines of existence that were always set to intersect from the beginning.)
Did I explain that coherently?
