my mom is 80.
although the distance is great between us, i appreciate her, and am grateful to have her in my life. i 'phone home' to talk with her almost every couple of days.
for mothers day, i always send a card, (not enough), so she gets a big spray of flowers delivered, (loves flowers) a gift card/and or something she wants/needs but won't buy for herself, and frequently says "i don't want or need anything". i have sent two of my brothers on long distance missions to deliver something personally to her, all sorts of things, you name it, there isn't anything i wouldn't do for her to say thank you mom!
wish i could be there on mothers day, i can't, but just saying how much i appreciate her means a great deal, not just to her, but to me as well.