Be sure to let you mom know how much joy her gift brought you. It's always fun to be able to be spend money on yourself without feeling guilty about it... I just bought a new pair of jeans and a pricey belt with my birthday money and it was really fun. And I love the way God cares about the small things like a special piece of fabric that's there waiting just for you.
Keep us posted on DH ... prayers to both of you!