I cut and pasted this from another question from a mom...a while ago...
Hope it helps!
"Mercifully, none of my children has inherited 'stinky feet syndrome', but my dad (rest his soul) had it BIG time!! One of my earliest memories is that I could always tell when dad was home as he would take off his shoes when in the house! (LOL).
At some point, they came up with 'odor eaters', a charcoal insert of some kind for shoes. Not sure if they still make them, but if they do, I am sure ya can trim them down to fit your daughter's shoes.
I do have 4 'adolescing' young men in the house. I DO keep an open box of baking soda in each of their rooms, and in laundry baskets (changing the baking soda frequently!)I also keep a bin, in garage, for 'athletic' shoes as those seem to have a stronger aroma...also with baking soda...
Hope you find something that works!"
Take Care
Michele/cat