If it's repeatable you may have to turn the quest in via Lua since Honorbuddy doesn't like repeating quests.
Something like:
PHP:
<While Condition="GetItemCount(113578) >= 20" > <!-- Repeat for as long as we have 20 or more bones. -->
<CustomBehavior File="InteractWith" MobId="82727" Range="5" />
<CustomBehavior File="Misc\RunLua" Lua="QuestFrameCompleteButton:Click()" WaitTime="200" />
<CustomBehavior File="Misc\RunLua" Lua="QuestFrameCompleteQuestButton:Click()" WaitTime="200" />
</While>