In the Australian myth, what causes Yhi to wake up from her "long sleep"? 10 ptz?

The animals missed Yhi and she decided to return to ask what was wrong. Kangaroo wanted to jump and Wombat wanted to wiggle on the ground, while Seal wanted to swim. Lizard wanted legs and Bat wanted wings, and the Platypus wanted something of everything. Yhi granted them what they wished