I got back from Warsaw yesterday night. I was going to respond to you after I Skyped with my wife today but that will not be for awhile. Below is what I remember what happened and I will update this if I have anything wrong. I will also update this to tell you when my wife's visa is available to be picked up:
My wife brought copies of my AOS, this year’s tax return, last year’s tax transcript, my last two 1099-R documents, and an income verification letter, and none of these were collected or even looked at. She brought originals and translations of her birth certificates, marriage license, change of name document, Ukrainian police report, and her Polish police report and she also brought copies of all of those documents. They looked at all those documents but only kept the original police reports. My wife brought two passport photos and they didn’t keep them (maybe they made copies of them but I don’t know that). My wife also brought photos of us, copies of emails, and copies of Skype calls and none of these were looked at. My wife was in the embassy for about 2 hours and 15 minutes and she said the interview lasted about two minutes and she was asked about 6 easy questions. I’ve heard many people say it’s better to be over prepared rather than underprepared I would agree with that.