I believe she is a Lunar Exalt, capable of transforming her clothing when she shifts her shape. In seconds she could be a huge monster, a hunting cat or simply wearing a different outfit. The position of her feet and the non confrontational way that she is holding her weapon suggests that she is stalking someone's affections rather than a boar for dinner. Unless I missed my guess.
She's a dawn caste solar. The reason she would dress impractically and hold her spear casually is that she is supremely (and perhaps excessively) confident in her ability to defeat her foes. She's a warrior and a general, not a hunter.
Short version: Her name is Karrilah, she was born and raised in Harborhead. After childhood's end, she joined the Brides of Ahlat and was ordinarily discharged when she turned 27. After a few years as a mercenary in the Scavenger Lands, she Exalted as a Dawn Caste Solar and returned to Harborhead to free it.
Her full backstory is too long for a comment on deviantArt, but it's here if anyone's interested: [link] also found there is her (frankly absurd) stats. Our ST is way too generous with the xp.