Final answer:
The subliminal message given to Nausicaa by Athena, although not detailed in the provided text, is typically portrayed as a dream persuading her to go to the river where she meets Odysseus, aiding his journey.
Step-by-step explanation:
In the story of Odysseus and Nausicaa, the subliminal message given to Nausicaa by Athena is not explicitly mentioned in the provided text. However, based on other sources from Homeric epics, we know that Athena often guided characters through dreams or disguised forms. Although the information provided does not directly pertain to Nausicaa, it is known that in Homer's The Odyssey, Athena visits Nausicaa in a dream, persuading her to go to the river the next day, where she encounters Odysseus. This meeting is essential as Nausicaa eventually helps Odysseus in his journey back to Ithaca.
The dream can be seen as Athena's way of ensuring that Nausicaa and Odysseus meet, displaying the gods' influence in mortal affairs and the course of destiny in Greek mythology. While not from the same narrative, similar instances of divine intervention are seen throughout ancient texts, where gods send messages and guide mortals subtly.