It went fine and took about 3 hours altogether. She says that the questions were easy and mostly about how we met and mildly personal information (favorite food- that kind of thing). They also quized her about the proof of relationship materials we sent in for the I-129F submission. She translated her own documents and that worked fine with only her signature on the translation. The payment-website account system was a confusing pain-in-the-butt and we had to go on-line after the interview to confirm our payment before they would issue the visa.