While I do not necessarily think that she is handled well (I also do not think it unnecessarily - her characterization leaves a lot to be desired), I will play devil's advocate and say that it is explained within the story why she is so different from the standard orc mold. It makes for a boring sub story, but I would argue it works well enough to explain the issue.
Also, having a tough talking, no shit taking orc would have the disadvantage of making her too similar in archetype to Naomi.
But yeah, so far it seems like nobody, including Zanith, really knows where she is going. She's probably there to complete the list of archetypical fantasy races with Elf and Dwarf, however that alone does not make for a compelling storyline.