Let's say for grins that this woman does return a very large amount of items. And let's say, just for grins, that she did, in fact, consciously switch the tags from a purchased item to another item not purchased at that store and returned that item (either with or without a receipt), but that most (95%) of the returns she made were legitimate. If that hypothetically did happen, what is her risk and exposure? And can the store extrapolate from those items that all the other items she returned had the same thing happen and charge her with that. And what are the possible charges and consequences of her having done that? Perhaps they have the returned item upon which she switched the tags as evidence.