Zila was a gift to the northern alliances after they aided the emnei in restoring many cavern blood connections. A seemingly innocuous creature born as a mixture of thay'valay and emnei blood. Zila became the first saint between the two races and she dedicates her life to rewarding good deeds done over the year. And for those with less moral goals, she will pursue them to frighten or punish them using the power of crystals. Crystals which are sent to her from across the land along with humble requests for gifts which Zila, along with the aid of other bloodborn, attempt to deliver come the holidays.
In the modern era this tradition has spread and most opt to, instead, hold their own gift giving and cheer bringing events. Though Zila still happily accepts crystals, she's seen as more of mascot for the holidays and many dress up in similar garb before spending their time bringing gifts and good tiding to others. (Or just doing so because they like how her outfit looks.)
Towra would happen to fall into the former category. She always struggled with family troubles. As a result, she relished in the magical holiday season when her family would get together on both sides and set aside their differences to celebrate. So she took it upon herself to make sure that all could enjoy the holiday season as she did. And so why wouldn't someone so dedicated be deserving of some reward? And what reward could be better than being filled with holiday cheer?
Was a bit torn on making her a mixed breed, but decided against it. She was going to be part filimuri with a horn on her forehead for uh... no reason at all. None. Definitely not a glowing horn for sight in dark blizzardy storms. Anyway, her tf is going to be a nice simple reward of bigger boobage.