Great sole shots! Thanks for sharing them here. 😀
Put her feet in stocks with her toes tied back, and then slowly tickle her soles with an electric toothbrush.
Tickle her feet in socks first.
Then if she can't keep her feet still, remove her socks.
Then if she can't keep her bare feet still, tie up her ankles and toes.
Then if she can't keep her tied feet still, use baby oil