I am having a small wedding with a small guest list. The mother of my maid of honor was not invited. She however sent a nice gift to the shower. She also plans on attending the ceremony. My maid of honor asked that she not be invited to the reception since she will not know anyone except the maid of honor, her daughter, and her mom stresses her out. She wants to enjoy herself without needing to babysit and stress. It just seems rude considering her generosity to exclude her. Thoughts?