In the prime canon, she's a gaia deity that embodies life and procreation, representing the moon my foxes evolved on. She is secondarily a goddess representing innovation, as she was believed to be living in a giant Sanctuary in the Sky and the vulpine civilization below believed it to be a divine challenge to reach her.
Her male counterpart, Trunai, is the god of fertility, duty, and unity, always staying beside Deynai, representing the super-earth that Deynai orbits.
It's a bit odd, since their secondary attributes embody the typical personality characteristics of the reverse gender; female foxes are more commonly the dutiful leaders while the males are the curious innovators. But Deynian foxes are themselves genderfluid, so it's not all that unusual to them. 😛
Depends on the canon. In the prime canon, she's a gaia deity that embodies life and procreation, re