Princess Luna is my Princess of Water (corresponds to the King of Cups in a normal deck). It might be a bit of a reach to place her in this role but I think that her understanding of the subconscious and her capacity for deep emotional understanding (while at the same time permitting the intellect to do it’s job) makes her a good candidate for this role in the deck. At the very least, her reversal for this card is spot-on, and sometimes a card reversed is more meaningful, especially when there is tension in it remaining upright.