"It's okay, Barry, I get being curious." Kitty grinned, letting her hands drop to her sides as she stepped closer to Barry, shrugging. "Like I said at the bonfire, at 13 my mutation activated, and starting at the school gave me the chance to practice and work on my control, so with practice came figuring out everything that I could actually do with my mutation." She explained, hands moving behind her back.
"As for staying solid... I haven't always been constantly solid, actually." Kitty mused, thinking back to her time on Muir Island and the help that she'd had to get from Reed. "I'm aware of my body and my surroundings, through training, and that keeps me solid, to an extent. That was how I worked through accidental phasing because when I was younger big sounds or nightmares or even being startled would send me right through the floor."