Mamagus, This is a lovely idea. I really like MadQuilter's idea of making a memory quilt with photos. I lost my Mom about a year ago. Some times I curl up with one of her old shirts and try to sleep. Trust me the love you put into this and the idea of Mom's hugs will be greatly appreciated.
Possibly add a fabric with some of Mom's favourite flowers or additional dragonfly or birdhouse prints. She has a good friend! Good luck!