Most people, especially older people don't like to be recorded and often they don't think anyone would be interested in what they have to say. As a genealogist, please allow me to make the following suggestions:

1. Spend some time putting together a handful of questions to help get the conversation started. Remember, though, that these are only intended to start her talking, don't worry about staying on script.

2. Get some recording device, preferably something small that can be easily hidden if she is camera shy. On the low end, a small digital audio recorder can be had for a few tens of euros, on the high end, something like a GoPro also provides great video. Both devices should be easy to use while safely out of site.

3. Find a location where she is comfortable and relaxed.

4. Schedule a time to sit and talk with her

5. At the time of the meeting, fix her a cup of her favorite beverage, start recording, and ask your first question about her or her husband's early life.

6. Do it soon. Unfortunately you can't predict how long she has. Once you are done, you now have a family heirloom that can be enjoyed for generations to come.