Dear Erin and Daryl,
The Mister, The Boy and I are coming to your wedding. We wouldn't miss it for the world. See, the response card is right here. The Boy thought it should go in the recycle bin - no wonder I couldn't find it.
Oh, did you know that it's been raining all morning?
I know this must put me at the head of the list of Worst.Mother.Ever.
Would you like me to send it to you, once it dries? (I think your lovely pre-stamped envelope is also in this wet, sopping pile of mail). Or will this response be enough?
I love you, Erin. I can't wait to see you and Daryl start your life together as man and wife. I fear that my face may be as wet as the response card before the reception. (Don't worry, I'll have Kleenex).
Please let me know how to resolve this situation.