I thought that I sent everything my fiancee was needing for her interview, but she mentioned to me she needs an entire copy of what was submitted in the I-129F. Is this correct?

yes my understanding from what i have read here is she needs an exact duplicate of what you originally sent and also including the originals, IE birth cert, divorce degree. try this link it might help
http://www.visajourney.com/forums/index.ph...mp;page=k1guide

At the interview they have the right to ask for any origial of a copy filed with the I-129F - so if you submitted copies of your birth certificate they can ask to see the original. The same goes with divorce decrees, boarding passes and receipts. From what I've read they rarely do this, however, know they can ask for it. They've already got your file with your original submission. I made three exactly the same sets of documents - two with copies (in case my mailed in application was somehow misplaced) and one set that included only original documents and no copies. I will bring this one with me when I go with my Fiancee to the interview (of course I will have my I-134 as well).

Thanks...sent the original materials I had to her today. I contacted my attorney to send a copy of our I-129F for her as well.