Sorry but to me this sounds like "Suits are back!" [1]
Essentially by reading the same book the grandma and grandson had something to talk about. Obviously. Books aren't essential for this and there are any number of things that could have created the same effect. (She could take up playing and understanding, say, video games as only one example.). [2]
Essentially by reading the same book the grandma and grandson had something to talk about. Obviously. Books aren't essential for this and there are any number of things that could have created the same effect. (She could take up playing and understanding, say, video games as only one example.). [2]
[1] http://www.paulgraham.com/submarine.html
[2] I talk with my daughters about "The Bachelor" which I watch with my wife.