["I was at my mom's house doing some pet sitting for her recently, and I found an old family photo album. It was interesting going back through it and reminiscing.", 'That sounds like a lot of fun! Did you discover anything new?', "I found some photos in there of my mom's house growing up. I had no idea she'd lived on a farm as a little kid, she never talked about it!"]
That's pretty exciting! I hope it sparks a lot of new conversations for you both.
I found an old family photo album at  my mom's house recently. It was really nice to go back through it.