To experience art does not mean to contemplate an immutable exquisite object, but to cultivate a relationship, says this dancer/choreographer. “It’s similar to what you get from long-term friendships or marriage or family.” Maybe not my family, but I see what she means. Introduced by Ralph Farris, violist in the quartet Ethel, and creator of Co-Lab, a virtual conference on collaboration. He and she have teamed up delightfully.