No shrinking violet

The other day, I walked into the kitchen to get Jonah a juice box. I left Gracie on the floor in the living room with him briefly. Not a second later, I heard Jonah screaming like a little girl. I ran to see what was the matter and found Gracie, with a death grip on Jonah's hair, pinning his head to the floor. SHE was grinning and laughing.