This woman-thing reminds me of when I worked as a salesperson for a forge that created all manner of metal gifts, serving wear, etc. This shop had a bunch of things readily available in bronze, pewter, aluminum, etc. on our sales floor that came with lovely designs. Those particular items were returnable. We only had one stipulation to our return policy: if the item has been engraved, no returns. And we don't give cash, only store credit.
That being said, we also did fabricate items out of special metals. These tended to be quite pricey.
One day, I get a woman in there who registers for all sorts of things; the bulk of them being in special metal. Her guests come in and place the order for these custom pieces, and almost all of said custom pieces are further personalized via engraving. Some of them had the most lovely messages. Guests also purchased some of our "ready made" items like coasters, candy dishes, picture frames, etc.
Less than a month after the wedding, the bride comes back in with her groom, looking to return all of these items. I look through what she has and separate out "returnable" versus "non-returnable". I explain to her that I can return this pile of items for her, but I can only give store credit. She is not happy, and getting quite snotty with me. She jabs her finger at the other pile and asks me about that one. I tell her those items are non-returnable because they have been engraved. I explain to her that we cannot simply brush out the engraving, as it would weaken the metal and destroy the integrity of the piece. She. FREAKS. Starts yelling at me about how she only wanted these things to return them for cash, and goes to far as to throw a stack of aluminum coasters at me before one of my co-workers runs to the back to grab some of the forge boys for back up. Long story short, she didn't even get store credit, and wound up leaving with nothing after we told her she could either leave of her own volition with her items or we could get the police to come and get her for attempting to assault not just an employee, but a minor (I was 15 at the time, although I looked 25). She left on her own without any of her stuff, and was permanently barred from the premises, needless to say. Maybe she was related to the bride from this sordid tale?