Hi, I can help you today.
You may not have overreacted as much as he was insensitive to you. It was not the smartest thing to say and if he impulsively tried to make a joke out of it, think of it as just that and let it go. I would not think it was funny either but I also would not take it so seriously unless he has done something in the past to make you react this way. He should apologize for him making something as serious as this a joke, maybe he just didn't know what to say so he said the first "tension" breaking thing he thought of....don't let it ruin your day.
You are also a wonderful mom to do this for your daughter if that is what she decides. Good luck! Please accept so I get credit for my response.