just fyi, you don't need to do the hail to the NPC for your home city/hunting area. any of them will do provided your faction/diety/class is good enough to allow you to wander about relatively unmolested by the citizenry and guards.
that said, i believe your NPC is in Rathe Mountains, but i don't know its name.
if you can freely move about Kelethin, why not see if you can find Enyaanuia Windancer and hail her? you'll go through a script, she'll give you a long tale about the wayfarers, and out of all that, all you need to remember is:
a- adventures
b- favor journal
c- morden rasp
d- farstones
then, hightail it to any Adventurer's Camp, and hail the pertinent NPC there. as i was in GFay, i headed to Butcherblock and hailed Vual Stoutfest, told him the 4 answers, and got stone.
i did this way back when i was a lvl 15. as vah shir beast with no +/- faction hits to elves or dwarves i had no issues moveing through the zones, talking to npcs, and getting the stone.