This is for you if you watched the finale of "Better Things," and you found yourself becoming a trembling puddle of tears. You know who you are. One of Pamela Adlon's many gifts is the ability to identify great peripheral characters and bring them to the center. I'm not sure Adlon ever dreamed of making Xander prominent (in early days) -- but Xander's difficulties became compelling, and Adlon wisely pursued Xander's story in the middle seasons. Lenny was a blip on our radar, for a while, and then she began to suffer through an especially painful divorce -- and so, for a year, she was given a chance to step down-stage. This current season, the standout was Caroline. We hadn't seen much of her. You know Caroline; she exists in your own life. Maybe you *are* Caroline. Caroline is the person so fragile, when her crazy mother-in-law complains about a chandelier in earthquake-plagued L.A., she can't simply laugh it off. She must instead say, "Who told ...