My son's party was yesterday and we are writing the thank you cards. One child didn't bring a gift so the thank you cards we have are not appropriate - they are pre-written "Thank you so much for my ...... ", "I love it because ...... ". I'm not sure whether to not give her one of these gift orientated thank you cards, as it would be passive aggressive, or to dig out an adult thank you card, as it would be obviously different to the rest. It's not big deal that she didn't bring a gift and I don't want to make it an issue, but I do want to send out thank you cards. Any tips?