Having been through this exact thing (except the abuse was male on male with an uncle) I definitely understand your frustration.
I too confronted my father and the elders. I was given all the same responses we have read about in these posts. Their rehearsed answers are devastating for one reason: They refuse to accept any responsibility. (read their "secret" book Pay attention to Yourselves and Your Flock. posted on the net in it's entirety...Just search the title)
Part of what you feel is because (pardon my assumption) there is no closure for you in their answers. There is a "no apology, no regret" attitude about this subject (and others). "leave it to Jehovah". I think what victims of this abuse seek most... is an apology. An admission that someone should have done somehting. It may sound harsh, but the sad truth is, you will never have a sincere apology.
As the world is educated about the trappings of this cult, we will be seeing more and more that they are held accountable by society for these horrible things. Be patient. Be strong. Dont be afraid to say outloud to your father.... "you should have stopped this, you should have done something about it". As long as you keep this inside, it will only do more damage. Write a ten page letter to the WTBTS, and tell them what this has done to you. Be blunt, but polite. There is enough information on this site to help you say what you want to say. Force them to at least see and hear you. Don't expect anything FROM them, other than re-hearsed speeches and scriptures taken out of context.
Something will happen soon. Speculation is pointless. But I have a very STRONG feeling. We all know about the full assault on them on the front-lines right now... they are being put in a light for the world to see.... but in the end this will only make them more secretive. Under this identity I can tell you that things are happening internally in the organization. It is far from over. In the very near future I will be posting some interesting "findings". Who am I? Bond. James Bond. I am the new bug in the system. I am the new wrench in the works. I have turned my anger to more.... useful things... Like leaving this organization in a smoldering pile of rubble. But that will come soon enough.
Until then. I sympathize. You are a strong person with great courage for surviving this.