You could get her a designed picture frame with the family picture in it or some beautiful jewelry. You can get her a lavender love bouquet, a strawberry shortcake gift, a mercer bathtub caddy or make her some of her favorite cookies.
IM a mom and i love surprises....I still buy my mom stuff. im going 2 surprise her by putting a little note in her purse maybe attached to a small box of candy or jewlery. See as young child i use 2 encourage her and tell her how much i lub her. She remebers them day but ive been slacking off . IM sure whatever you get her she will like...but most of all tell her how much you care.