The talimari often hide viscious and aggressive attitudes behind polite smiles and sarcastic comments. For Desatea she hid no ulterior motives and the dual rows of sharp teeth only displayed to sate hunger. In spite of her differences to others of her kind, she was well liked by everyone she met and aided any in need. Though she would have stayed to help her own kind willingly, she felt drawn more to thay'valay society, mannerisms, and ultimately worship. Eventually the young girl grew into adulthood and her dedication to Glimmer until she was ultimately chosen to serve as a paladin.
I have written about the talimari briefly in a post on my DA. Generally speaking, they are usually more magically inclined and quite hot headed. Not really the type you'd expect to become a paladin. Though there are some who are born more level headed and logical than others. As well, Desatea would be outside the norm for being physically strong too since talimari are supposed to be a bit on the weaker physical side to make up for their stronger magic. For Desatea it's more of a case where she is still quite capable with magic, but also has sufficient strength to wear full armor and use a sword.
But she could always use more strength to compensate don't you agree? Afterall, paladins are meant to be holy warriors right?
As I had mentioned in the poll results for April's NPC, I was going to make her into a paladin of Glimmer like Milan's sister Tyrial. (I went ahead and included a reference picture of Tyrial in her gear so you can see how the armor actually looks in detail.) I went ahead and made Desatea have a youthful look to start with in spite of her being a fully grown adult. (She is a talimari afterall) I also decided on similar eyes and gave her heterochromia as well. (Though heterochromia is a lot more common for talimari so it's not much of a surprise for her and Tyrial naturally had blue eyes so it's not the same between them)
I don't believe I've really written a ton about how paladins work in this particular universe, but it's a sort of mixture of what you'd expect of a paladin and a kind of green lantern deal. Each paladin has a lantern which can be charged up with energy from Glimmer and then used as spells or enhancements. When the energy runs out, it has to be recharged. The reliable way to recharge a lantern is to visit a church that has Glimmer's energy stored, or visit the thay'renay (thay'valay queen). The unreliable way is through prayer. The reason that it's unreliable is that the gods in this universe have very little ability to affect the world and getting their power through to their subjects is exceptionally hard and rare. The only time that Glimmer regularly delivers energy is once a year (when the barrier between the dimensions is weakest) to the queen and churches where it is then rationed out to paladins.
It's worth noting that even without any lantern energy, paladins are still quite strong warriors and often have their own magic they can use. If she weren't a paladin, Desatea would be considered a battlemage for example. A paladin in this universe wouldn't really be a class, more like an elite rank you add onto a class. There are very few paladins.