Hold off on the scrubs until you know whether she is required to wear a certain color for her job--many hospitals do that. I work at a Medical Center (not in nursing!) and see many nurses carrying a tote for their "extras"--scrubs (sometimes they get blood, etc on their uniforms and need to change); lunch, etc. there are also some cute printed nursing sayings, etc on fabrics and that would make a cute tote or wallhanging.
Also--a gift card for a pedicure or a massage would be nice--nurses have a very physically demanding job and welcome both!