your grandmother was very talented. Why dont you get a keepsake made of the quilts in the form of a photobook?
They are books and you can put whatever photos you like in them and I am not sure but you can probably put text in too. That way you can put down the story of the quilts as well.
If you dont like that idea then take photos of the quilts and put them on canvas that way you can hang them on the wall and still enjoy them yourself.