Splitting up was a nice release from the formation that they had been focused on the last few days. Especially since they all had their own desires to make the most fo this unique place. The butterfly paradise had proven to be a great way just to relieve their mental stress alone.
The very fact that many different kinds of energies were smooshed together here was exactly why this was a great place for all of them.
The group had multiple beasts each, even the individual beasts they had, were multiple energy type beasts. Grace had wind and ice, therefore, she was in an ideal place where she and the first finch could encounter both types of energy.
For her specifically, she was able to better understand the two energies within her body because of the smashed together nature of this dungeon.
Creation is hard, cheer me up!