If she was making breakfast then I would interview her while she prepared the food. I explained to the Hastings that they wouldn't have to do anything extra in their day. We just shot their usual activities, of course they would take a little longer to perform than usual. When I reviewed the footage I wished that I had just asked her to tell me a little story about her granddaughter. I try to ask questions that donut place any judgment on them and to keep it as conversational as possible.
Repetition is also important.
The second and third interviews are always much looser. All of the footage has to be reviewed and the length of each shot needs to be identified, this is all part of the logging process. Once all this has been accomplished, the producer can begin creating a paper script from the interview transcripts. Traditionally, the audio script is on one side of the page and the video script is on the other. With the paper edit complete, the producer can move into the edit bay.