
Cheer Up Girl!! Don't let a moment of planning your joyous event bring you to tears. I would just explain to mom that while you appreciate her idea for an engagment party, you and Mr. Lewis would prefer to spend YOUR money on other areas of the wedding. I would also make sure that she knows that the miscommunication upset you and suggest that in the future all things wedding are discussed and agreed upon upfront to avoid miscommunication and hurt feelings.
Best Wishes for Smooth Sailing with the rest of your wedding plans.
Future Mrs. Kleine