I was hosting a dinner party and wasn't sure how to deal with this rude situation?

[SayWhat?]

I had put a lot of work into a ladie's luncheon I hosted the other day. We cleared the table after we ate, and I didn't want to serve dessert right away. I wanted a moment to visit and digest first.

Several of the women had their children with them...one daughter asked her mom for dessert but her mom informed her we weren't eating dessert just then. So then the daughter starts complaining how hungry she is. The mom came to me and asked if I would go ahead and serve dessert b/c her daughter was still hungry. We had not run out of food at dinner, the daughter was just guilt tripping her mom to get dessert. This much was obvious to me and the other moms too. I made the daughter a sandwhich and told her dessert would have to wait. She didn't eat the sandwhich of course.

Did I do the right thing? Was I rude to deny a guest's request? Should I have pointed out to the mom that her daughter was manipulating her?
Dessert was a beautiful english trifle I was very proud of. I wanted dinner to settle a little and give myself a break from playing waitress before bringing it out. You can't serve one serving of trifle without turning the whole thing into a mess.
Hopefully when mother saw her daughter not eat the sandwhich, she wised up to what was happening.