hello. not sure if this is the place for this question and perhaps i misplaced it in another listing but here goes...i bought a brief that i never used and ended up selling it on an auction site. the buyer stated that it is used and wants a refund. although i don't do refunds, i'm gonna give it to her. my question is this, how can i tell if it is used since it looks new to me? the bag was purchased more than 2months ago and the store has a 30 refund policy, what can I do? suggestions?