Buy her a nice blank book, and put all your favourite recipes, and any family recipes in.
At best a bought cook book will only be used a couple of times, and then sit on the shelf gathering dust and that grunge that develops around stoves.
If she actually adds to your blank family cookbook, she will more likely remember the recipes, and refer to it often.
I still refer to the one my chef made me start as an aprentice about 15 years ago now.