I have been BFFs with a girl for 16 years, but when I asked her to be one of my BMs, she refused - citing that it was too expensive (we're having 2 weddings - Canada and France), because she had just bought a house. Our friendship had been deteriorating over the years, and this was the last straw for me, so I cut her off completely. My mom, however, says that as we grew up together, I shoud invite her to the wedding (my parents are paying for the wedding). My sister and BIL also said that same, and that inviting her would be "taking the high road". I am still angry and don't really want to deal with her calling/emailing, which would be inevitable once she received an invitation. Advice???