So we haven't sent out invites yet, but are working on guest lists. We have limited my fiance's family guests to 50 people because he has a larger family (I'm only inviting 20 of my own family) and we're paying for everything on our own. His mother is in charge of gathering information from his side of the family for invites, but I haven't told her the limit yet.
I'm nervous because at his brother's wedding, she invited WAYYY too many people. Her limit was around 60 and like 80-85 people in his family ended up being there. It really upset my fiance's brother and wife so I've already seen it happen before. There is no way I can accommodate more than 50 from their family plus our venue is smaller and definitely won't be able to hold the extra people.
How do I go about telling her that she can only invite 50 family members? And how do I make sure that only 50 guests are actually invited??