I’d probably try to relate your earlier memories as to what was so different when you were younger - maybe using age 18 as a base.
When I was 18, I had never touched a computer, would not have cellphones until in my 30s. That kind of stuff can be hard for future generations to appreciate. Similar to our prior generations using iceboxes and outhouses…
Add some earlier stuff, about childhood air raid drills, learning cursive, whatever. Then jump forward to your young adulthood, discussing the birth of the child’s parent, and what things were like then.
Might be nice to compare some societal trends with current events, to allow her to see whether progress had been made in upcoming decades. Such as you being alive at time of Civil Rights Act, failure of ERA, current developments re: gay rights, legalization of marijuana, and physician assisted suicide. Maybe mention the significance of a black president, and the inability to elect a woman.