This quest (and Vahlara as the quest giver) does not give the Kobold Skull Charm any longer. The Charm is received by completing the 'Basic Training' quest only, and is received from Arias, the Revolt Leader. Instead, she gives a piece of Gloomingdeep Kobold armor for your class. I received Gloomingdeep Kobold Chain Sleeves as a Rogue. The quest text has changed to reflect this. See below:
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You say, 'Hail, Vahlara'
Vahlara says 'I'm glad you managed to escape the slave warrens in one piece. There are many [others] who were not as lucky. Here, take this armor we found on a kobold. It's not much but it should keep you safe.'
You say, 'What others?'
Your task 'Basic Training' has been updated.
Vahlara says 'We have many wounded and they need bandages. If you can find any gloomingdeep silk, bring it to me and I can make more bandages. I'll reward you with whatever burlap armor pieces I can find.'
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She still accepts the silk for Burlap armor pieces...

