sometimes people make goofy jokes when they don't know what else to say. it wasn't appropriate at all.
this reminds me of the sweet stories in the Bible about the woman who turned her house upside down looking for her lost coin, and the shepherd who went out to look for the one sheep when he had 99 others in the barn. your love for your cookie is a special thing. i think the Lord knows and understands your pain, and is listening.
please try to take comfort this thursday, and let your family and other pets help you get through the holiday.
i can't imagine how hard it will be. our prayers are with you.