First off I would like to say how sorry I am for you, your siblings and your family poopie.
To answer your other question I believe strongly that there is zero moral justification of so-called "clergy confessional privilege" in cases of child abuse.
I also believe the JWs cannot use "clergy privilege" to hide behind simply because they discuss the matter amongst other elders, the Branch, possibly the CO and others so confidentiality has been breached from the getgo.