There could be no more auspicious moment for Suzanne Farrell to mark the closure of her ballet company than December 2017. With the New York City Ballet future of her former partner Peter Martins very much in doubt, Farrell sent her dancers out onstage at the Kennedy Center last week to perform works she and Martins had often danced together, works created by the man who cast her out of his company after she rebuffed his proposal.