Complex sentence: Maura Sills is primarily responsible for the development of the psychotherapy model called Core Process Psychotherapy which is taught in a professional training at the Karuna Institute which she founded in 1984 with her then husband Franklyn Sills.
Split into simpler sentences: Maura Sills is primarily responsible for the development of the psychotherapy model called Core Process Psychotherapy which is taught in a professional training at the Karuna Institute. She founded the institute in 1984 with her then husband Franklyn Sills.