The girl is wearing black buffalo T-24400 boots in this clip and uses the hard platform sole and the block heels to crush a whole bunch of toycars on the ground. Of course it's really easy for her to flatten her tiny victims under the hard boot soles and in the end only very small pieces are left on the ground next to her feet.
A girl's wearing black/green buffalo shoes and uses them to crush a bunch of toy trucks. Of course the trucks crush easily under the massive weight of the giantess.