My grandma was very thoughtful, and bought me a cook book for Christmas. The problem is, that it's a vegetarian cook book, and calls for a whole bunch of specailty cheeses and the such (I'm a vegan). So, I decided to not mention it to my grandma, as to not hurt her feelings, and to take the cook book to Barns-N-Nobles, and trade it for a vegan cook book. So, I went to return it, and the worker was very nice about it. He scanned it, typed a lot of junk, and finally said that it didn't see it in the computer. He added that usually, it would be not problem to return it, even if it came from a different store, but the book wasn't in the systom at all, and so he didn't know how much store credit to give me for it. He then added that if I could get the resipt to show how much it was, then he would give me store credit for it, even if it didn't come from that store. But should I ask grandma for it? We are just starting to get along, and I don't know how she'll react. I don't want something as stupid as a cook book ruin our growing relationship, but at the same time, I don't have anything to do with the cook book, and it's pointless to keep it. So what should I do?