We have a wanderable registry and were just notified that our college friend gave us like ten different things to talking over $500. We arnd our friend are only 30, and most gifts we have been getting are $50-$100 range. I am in shock at the size of this gift, and want to make sure it was intentional and not an oversight by things being left in her "cart" or something. Her husband is a dr, but this gift is just so much...what if it was a mistake? Is there a tactful and grateful way I can check in an let her off the hook if it was a web shopping cart error? Or do I just send a super nice thank you and let it be?