I've slowly started finding time to try and level Kallixta, even if it was a short amount of time. So I had her answer the Hero's Call for Twilight Highlands. Kallixta ran around Stormwind with her buddy, Prince Anduin, and saved civilization, or at least Stormwind, from a explosive end. Her reward was the Truthbreaker Shield
Kallixta stopped before boarding the flight to Twilight Highlands. She needs to finish up in Uldum first.
One discovery from the research in equipment and upgrades was that Kallixta can do the initial Molten Front quests for some excellent upgrades. I only discovered this after making some of those purchases.
Oh well. It's only gold.