Please do not over think this..use the scraps as you have planned ..oh and what a blessing to have your Grandma..I do not know your age..but I lost my Grandma in 1975, shortly before her 75th birthday, her death come unexpectly. Glad to hear you have great memories of her. My Grandma also taught me handwork. She sewed but did not quilt nor did my Mom. I began quilting in 1997 by watching Alex Anderson on TV
Judy in Phx, AZ