I'm getting married in April of next year and I am trying to put together a guest list. My parents are paying for an elegant reception at a gorgeous ballroom and because of that (and financial reasons!) I would prefer no children at the reception. However, my fiance's mother is hurt that we would not be inviting my fiance's niece's (all between 12 and 2 years old). My fiance is ok with inviting them or not, he doesn't really care. How can I navigate this situation diplomatically. I want her to understand and not hate me.