I requested a large Disney book from the Mouse Works collection, they are like 11 inches and have 96 pages. I always check very carefully since there are many Disney books that I am asking for the right one.  So I get one The Little Mermaid and its like 6 x 6 maybe and the IBS # does not match. So I pm her trying to explain this isnt the right book which she acted like she was having trouble understanding. I even copied the info on the book it was suppose to be. Then she asked for the book back.  I told her and copied that she needed to give me a credit for that also which she didnt like. So today I get one credit from her, no message or anything so.......................I just keep the book unless she sends me another credit right ?

Yes, you are not obligated to send the book back if you were not given a second credit to do so. 

Did you call it an IBS # in your message or was that just a typo? It's ISBN #, so that could have been what confused her.

She just sent me a message that she had emailed the people here and they told her what I did. Well I copied the rules from here. Oh well some just dont believe you. She said keep the book. guess shes not to happy. People need to make sure what they post does match the info.

Kay - So you received a totally different book from the one you requested? If that's the case, you shouldn't have marked it received (per the rules):

If you received a book you did not request (not just the wrong version of a book you DID request but a title you do not recognize), you should NOT mark the book received - you should PM the sender as described in I received a book I didn't request!.

If she was mailing books to two different people, she may have confused the wrappers and send the book you requested to somebody else.

No it was the same book but not the right version, she had not listed it under the right number. It was the Little Mermaid but not the one it was suppose to be.