She came down a little hard on her heels, as if she didn't walk in her bare feet that much, putting down her heels and then letting the weight move along to her toes as if she was testing the floor with every step, putting a little deliberate extra action into it. You never know for sure how girls' minds work (do you really think it's a mind in there or just a little buzz like a bee in a glassjar?) but you got the idea she had talked the other two into coming in here with her, and now she was showing them how to do it, walk slow and hold yourself straight.