Oh there’s really no nice way of putting this one! The two people who raised her, 2 dates is all she needs to remember before she won’t get the chance to forget. I’m the same, don’t want anything from them, but if I didn’t get a card or worse still, if their dad didn’t get one ( we always feel it more for the other half I think) then I’d not send her one either..... when she then “somehow” brings it up..... I’d just say “ oh I thought we weren’t doing ADULT birthdays anymore. If nothing else, she’d get the message and feel the metaphoric “stamp”. I feel your pain, and no I bleeding well wouldn’t remind her, she doesn’t have the excuse we have “old age”. I’m fuming for you, you can buy a card for 50p in Asda... or even a phone call, but absolutely no acknowledgement... nope! Grown up or not, she’d get a piece of my tongue.... then a cuddle if she genuinely apologised.