Cathy - one of my younger sisters.
Don - Cathy's husband.
b/g Because there are just too many of us for it to be reasonable to buy for everyone and their spouses at Christmas, many years ago (before any of us were married), we started drawing names out of a hat to buy for. As significant others were introduced, their names went into the hat, too. At the beginning, it was great fun for the names to be a secret. Now there's only the facade of secrecy and we pretty much all know who is buying for whom. We do send out wishlists to make it easier for our "secret" santa to buy for us.
So I am buying for Cathy.
Cathy requested a number of movies (her idea was basically 'pick one and I'll love it'. I bought most of her list because I found them on sale and it fell within my budget to spoil her).
When Don sent out his suggestion list, he included an extra item for Cathy - a TV show they both watch.
Cathy came to visit me and was raving about this show. She mentioned that they weren't able to wait until Christmas and bought the show.
Now I'm confused.
I'm confused for a lot of reasons.
First, it actually was not nearly 1/2 the price that Cathy said it was, leading me to believe I bought the wrong thing. Second, technically, Cathy never asked for it. But she was cc'd on the email that Don sent. So why did she buy it? Or why did Don suggest it?
Cathy and Don are very circumspect in their spending. They generally dislike the idea of wishlists and prefer to buy based on their personal knowledge of the recipient. In short, they aren't selfish people.
I could flat out ask Cathy about the tv show, but that would spoil the surprise.
Or I could talk to Don. But Don is rarely online and if I were to call him, I might as well just flat out ask Cathy about the show.
Or I could just wrap up the gift and let the chips fall where they may.
Or I could return it completely.

I'm just so annoyed that she bought something that she asked for. And now I'm afraid that she's bought other things on her list.
Is it rude to buy something off your own wishlist when you do this sort of gift exchange?
And what would be the nicest way for me to bring it up without saying "hey, did you buy this exact thing that I already got you?"