Hello,
If your wife has a receipt they may allow a refund though in some cases these stores will not give a refund for the card. As for buying something and returning it they will only refund the money onto a gift card or return card. This is very common and allowable by law.
You will want to look over the refund policy at the store. If Gift Cards are returnable then you can do so if you have a receipt. But most stores refuse returns on these cards and it is often stated at the store and sometimes on the back of the card.
You may want to consider selling the card at a place like Ebay or other gift card selling sites. Most offer full safety privileges on these transactions. Some sites even allow for a swap of the card for full value of another card.
I wish you the best,
Walter
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