I'm not walking in your shoes, but your D14 may have asked Mr. Fantastic to assist her in shopping for the items needed for your birthday meal. Unless I'm mistaken, I don't think she was planning to ask him to come or participate in the cooking/baking of dinner. She may now feel guilty for asking him to meet her at the grocery store.
I think I would have just let it go, unless she mentioned she had invited him to come over. If she had mentioned it, I would then have had to say that you prefer him not being there.
Please don't allow Mr. Fantastic to ruin your birthday or come between you and your daughter.
I do hope that you enjoy your special day and most importantly, enjoy that special meal your daughter is planning to prepare.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
