When the sphere of ice was done, Michelle pushed some of her spirit energy outside it, keeping it in non-solid state.
It wasn't all that difficult since Michelle was proficient with her ice element.
So, it was time to make the ice sphere into a spirit energy sphere. To desolidify it.
That was a bit troublesome. There were two ways to do it, and neither was optimal.
First, Michelle could thaw the ice, but some of the spirit energy in the sphere would then leave along with the melted water, potentially creating gaps in the sphere.
Second, she could force her spirit energy to rage within the sphere until it shattered and only the spirit energy was left behind. But that could destroy the shape of the sphere. And getting it back together would pointlessly waste her energy.
So how to do it?
Maybe there was a way to combine the methods.
