Mother's Day means celebrating motherhood with tulips, brunch, and unsolicited criticism. Nothing says Mother's Day like a day where the woman who "brought you into this world and can take you out of it" gets to surround herself with those she loves and family.
Say you love her this Mother's Day with a card from Hallmark and make sure you don't mumble when you talk, and, for god's sake, dress like you're not 14 for one day. Is that too much for a mother to ask from the child who put her through so much, including the longest labor in recorded history? Mother's Day. She gets one day for her, you get the rest of the year to recover.