Nina has visited only twenty-eight places or only twenty-six people
Nina has visited Carla, Carmen, Rita, Cassandra, Rose, Pearl, Donna, Hilda, Kathleen, Susie, Joanne, Velma, Dora, Kim, Myrtle, Lori, Mildred, Janet, Wanda, Sarah, Roberta, Sherri, Helen, Mattie, Brandi, Dolores and Agnes