That's wonderful you have something from her. I know exactly what you mean about the smell. When I lift the piano lid it still has that same smell of grandma and grandads house. I don't know how long that will remain but so far so good. If you find the time to keep playing it, I hope it brings you some joy!
I am relearning the piano! I played when I was a teen, did grading to a point but couldn't tell you how far along I got. I stopped during high school, to focus on rugby (and I have no doubt, was worried playing an instrument wasn't manly. Stupid stuff). I have a book now essentially called 'relearning the piano for dummies.' for people who have the muscle memory but sheet music to them, is hieroglyphs. Working through it bit by bit!
It's going well and I'm forever grateful that I inherited it, and that I got to spend the time I did with grandad. Growing up he was just that, grandad. But as I got older I realised all the things he'd done over the years. I found a wonderful write up that goes over everything though that would probably dox myself in some way - if I were to post it here. But the list involves two scholarships as a teacher, to travel the world and learn about other countries best teaching practice, working with handicapped students, running the local meals on wheels and reading to the blind as a part of his volunteering, helping to kick start a govt funded sex/health education program that is still in operation up and down the country, coaching sport, teaching music, playing in orchestras (and conducting smaller events) and amongst all of that, just being grandad. The write up even covers his gardening talents. The man practically willed tomatoes into existence.
I need to do more. That's the conclusion I've come to.