Thank you for sharing your intimate story. This sounds really terrible.
Yes it certainly sounds like child abuse, and if you are not so old, it might still be a reportable offense to the police and MSF-Child protection services.
Therapy is a two way street. The ability for the patient to benefit from this depends on the "Johari window". In simple terms: the more the therapist can reveal to you and the more you can reveal to the therapist, the wider the window. Through a wider window, both the client and therapist is able to access the domain of psychotherapy: which are the things that both you and the therapist does not know.
In short, yes, the more you can reveal, the more you might stand to benefit. But of course that is within the comfort zone and the strength of the therapeutic relationship. Sometimes, the time is just not ripe yet to disclose certain things.
Take care and I pray that you will find peace.
