Eri Petherbridge, a psychology student in Boone, N.C., was going to therapy three times a week when her therapist suggested she start using an artificial-intelligence chatbot for support between sessions. After testing ChatGPT, she decided she wanted a bot that sounded and acted more like a therapist. Her search led her to two mental-health-specific bots called Abby and Ash. She says they help her organize her thoughts, reframe her feelings and offer resources such as articles or TED Talks. “It’s not going to tell me how to fix things,” she said. “I still have to figure that out for myself.”…