Is she still alive? I can recommend interviewing her about the past and recording it. There may come a time where you will be glad to have those recordings. Or your children/grandchildren. Also, given the right prompting, you may learn things about her that you have never seen before.
They don’t have to be perfect. With Wisper and LLMs it’s easy to later filter out the interesting parts. Or even to turn it into some kind of personal memoir booklet.