My daughter is getting married in a couple of months. Her fiance's half sister is sponsoring a foreign exchange student for the school year beginning in August and wants this young girl to be invited to the wedding? We are already at 250 invitees without her and the cost of each person is around $75.00 for food and beverages. My daughter and fiance will have never met her before the wedding. As it is, I didn't invite some of my friends because of the space and cost. The sister mentioned that a stamp could be saved if the girl was not invited to the wedding because she was part of their family. What would you do?