our baby shower was back in june and i made sure to send out thank you's wthin a week of the shower. fast forward to now, a great aunt and uncle of my FI brought him a gift for baby in person (they did not make it to the shower). he thanked them in person and then thanked them again on my behalf when he saw them the next day. a few weeks later they called his mother to complain about not getting a thank you card??
did we do something wrong? it was so informal... they dropped a gift off randomly at him work and he thanked them 2x in person, I never even considered sending a card or letter.