She grabbed a bowl immediately once they were instructed to do so. Approaching the lake to get some water, she surveyed the bank for rocks and lucky enough, there were a lot of rocks around. After filling her bowl with water, she placed it on the ground and bent to pick up 8 medium-picked sized stones. After doing so, she returned to the place where Thereos was, carrying with her the bowl and the stones.

She followed the intructions, thus placing the stones on the edge of the bowl. Now what ?