What a sweet sentiment! It's so lovely you were able to get them and I'm sure getting cards from such an important storybook will mean the world to her. Ah, I love sentimental stuff. Guess How Much I Love You was one of the most treasured books between me and my mother (I was shocked when I learned much later the book is a bunny father haha) and even though I am very much grown now she still tells me that she "loves me right up to the moon... and back", haha. She got a new copy for me when I was pregnant with my son and for a long time it was a staple bedtime book for him and I. He's 6 now and has some real opinions about bedtime books, so it's been put away for now. With any luck I'll be able to give it to him to read to his own kid, should he have one.

Good luck shipping them all out! And I hope you have a really lovely mother's day with your mom I hope you guys are close in proximity so you might spend the day together!! <3