The Hidden Gem

Inspired by Huevember, I will be making illustrations with similar colors on the color wheel. As my second illustration from that collection, after 40h of painting, I created a fantasy setting illustration with hues from orange to pink.
The youngest sister found an intriguing gem in the garden and brought it in her room. It started glowing. She asked her older sister to come see the phenomenon. Both we're surprised when they saw the gem respond to the older sister's presence! Parts of the essence of the gem started to flow around, connecting the sisters and the gem. What could that possibly mean?