I've always had it in my head that Elves are savants.
My elf is a war savant leading a mercenary house, and Fred's Firiel is an extremely important NPC shipbuilder. Just based on those two examples, I'd say that your character's history is supremely tame.
Another important thing to stress would be; why did she choose to leave Xiuluria? Of the two elves listed, Firiel hasn't actually left; she only poked her nose out for a little while, to give a somewhat abbreviated speech - wowed everybody by simply being an elf (Fred's ability to describe beautiful women astounds me sometimes) and then went right back. Bhelith's reason for leaving is a long-winded tale about betraying some of her values in exchange for power and prestige, and that betrayal burdens her, almost to the point of exile. Elves need pretty darn good reasons to come out from under their rock, so I'd suggest addressing that more firmly.
Compared to the two already-in-use elves, your elf seems unspecial enough that I'd like to remark on it too; I think you're selling her short, or being a little too modest. An elvish engineer is one of the best engineers. Elvish generals, some of the best generals. Elvish wine is amazing; elvish clothing is masterful. As far as the place they're supposed to occupy in the setting, they're meant to be legends from a planet (earth we presume) so special that their simple existence is rarity itself. Firiel took people's breath away when she stepped up on stage. Bhelith holds or has held a high military or noble rank in four countries. So if I were you, I'd not hold back - really let your elf out! The thing that makes elves comparable as a species to things like Nekovalkyrja, which are impossible to kill, garts, who are robust, nepleslians, who are resilient and strong, etc. etc., is that elves are savants. Whatever they choose to put their hands to, they make it theirs, and few can (or should) be able to compete with them, at least academically speaking. Knowledge is their forte.
That in mind, I'd actually suggest filling out a somewhat more robust history, even if its short. The character you've got right now is good, but it feels like a regular character. Something else I'd like to see - play around with the idea of elvish nobility. I usually have Bhelith wearing a circlet. I figured, the more valuable the circlet (the material likely matters more than style), the higher rank of nobility the elf was. What social circle was she? If she was a high ranking elf, or if her family was hereditarily high ranking, then there could be some serious controversy about her leaving Xiuluria. Since you wrote her as a bit of a rebel (just leaving Xiuluria is a bit rebellions, is what I mean), you could also throw in that she's young, curious about the wide universe, and is 'slumming' perhaps - a tale that might actually lead to more elves leaving Xiuluria. How does she feel about that? Does she think about it, or is she young and naive?
You could also turn that earlier savant idea on its head and say (since she's only 28) that she's still searching for her 'thing' that she's good at and that SAINT is where she's starting.
Just shooting elf related ideas from the hip, here, so take what you like and leave the rest on the drawing board. Living history project, and all that.