I would think we won't do anything directly relating to the gnolls until the next night. We still have Felix to help make the burning suit, Ceru to mess aorund in dreams, and Li to intimidate, so our plan can move ahead for the next night. Could we get Ayla to track the gnolls, even without Danielle? It's just one check.
So, at the begining of the session, we start putting the plan into motion, and hopefully by the time we have more players, we can start scaring the crud out of the gnolls... hopefully.