June is one of the busiest wedding months of the year, and while the focus is usually on the bride and groom, it can also be a big adjustment for the mother of the groom. Lesley Koeppel, a psychotherapist with more than 30 years of experience and the author of How to Be the "Perfect" Mother-in-Law: A Lighthearted Guide for Moms of Married Sons, spoke to Andrew Carter.