My mother too suffers from Dementia. And it seems like my sewing her scraps together has made her so happy and brings memories back to her. She keeps the quilts and table tops in her home and proudly says that everyday she is reminded of how much I love her and care about what she cares about, not just being my Mama. So, your priceless act will be something that only you and your Mom will ever share - a blessing just for you. God bless.