I recently had the opportunity to interview Erica Cornejo, a Principal Dancer with the Boston Ballet and a new mother to a wonderful baby boy. I have long loved ballet, and as a mother-to-be, I was curious about how the roles of dancer and parent compliment one another. Boston Ballet Principal Dancer Erica Cornejo and her husband, Carlos Molina, performing in Balanchine’s Emeralds © The George Balanchine Trust. The Boston Ballet will be…