How many times do the trees call up the Zephyrs of Sleep in the novel, The Underneath?

Twice during the course of the novel the trees call up the Zephyrs of Sleep to allow characters freedom to pursue their love. The first time the trees call upon these Zephyrs of Sleep is when Night Song and Hawk Man slip away together. The second time these Zephyrs of Sleep are called upon is when Ranger, Sabine, and Puck are reunited after Gar Face’s death. The trees know the three need sleep to recover