This is an interesting thread, since we spent a day at DD's last week end and I took my Janome Jem along, so that I could do a little custom work on the younger DGD's pants. Younger DGD is 3 and spent almost an hour on my lap, intently watching what Nana was doing. Older DGD stood by our side, making comments and asking a kazillion questions. She is almost 6, saw one of those children's sewing machines and wondered if Nana would teach her to sew on it.
DD made the comment that she never had an Easy-Bake oven, because I taught her to cook and bake on the real thing. And I made the comment that my little Jem would be just about perfect size for older DGD in a couple of years. Next time the girls are here, I think we will have a little sewing lesson. Maybe pillow cases or a book bag....
Your DGD will love the Christmas present andt will treasure the time she spends with you.