The only person who benefited from the business transaction was the therapist, because she was still paid. A contract implies voluntariness and consent. Thus, psychotherapy without contract implies an absence of consent or voluntariness. Because psychotherapy is essentially a moral confrontation with oneself, and necessarily implies truthfulness, no one can be coerced into successful psychotherapy or truthfulness. Psychotherapy without contract is not psychotherapy at all.
Coercion has more to do with obedience and social control than with compliance and medicine.
Contractual psychotherapy with coercion is a contradiction. If the primary goal of therapy is autonomy, then that goal can be achieved only through clarity of contract. Therapists cannot enforce the success of therapy or their clients' truthfulness. They must be prepared to prove the validity of their product claims. Clients must be aware of their rights to restitution when breach of contract occurs.