Well, perhaps -- but they probably won't look like boots anymore. Also, for the cloth room to have any effect, they would need to be single sided polys On the assumption that you opted for simply parenting them to the feet, it might be possibly to use them as regular props, but for any sort of conforming or poseability, you'll have to set up a conformer. If you can get them the right size and shape to fit her, and it's for a still image, pose her first and then put the shoes on her. It'll work for an image, at least.

thou and I, my friend, can, in the most flunkey world, make, each of us, one non-flunkey, one hero, if we like: that will be two heroes to begin with. (Carlyle)