If they ask for gold and you don't have enough gold to cover, I actually covered that in the event. You give them what you have and the slave is disapointed at you. You don't get punished with extra time, but you're also not rewarded with any time off, and you still lose all your remaining gold on hand. I was thinking the keyholder doesn't know how much gold you have when they are asking for it so they would have no reason not to ask if that's what they wanted.