Hey @Rick
I've been mentally mangled too, for most of my 51 years. I wasn't physically beaten but there was so much other "stuff" that I really have no idea where to begin to talk much about it.
For almost my whole life this has been deeply debilitating, and occasionally still is, and until 2009 I didn't even have much of an inkling as to why. In all honesty I can finds lots of hell in my journey, and for so long that seemed where I was destined to live. The shocking part has been the grace I've found in the most unexpected places. I know that you know first-hand what abuse does in terms of making you feeling terribly ashamed, as if somehow it was our fault that we were abused. So how to begin to explain, let alone accept, grace?
Nearly twenty years ago I asked God why I couldn't live in the light, nor hardly even believe it was real. I longed to live in the light. Do you know what answer I got? A bloody question (typical of God's sense of humour, as I have discovered over the years)! "Why don't you try taking off your dark glasses?" I was pretty narky about it, like "what you think I like living like this?" But I also thought about it. I realised that what I had been through (or what I knew of it then) had made me deeply cynical about everything and everyone - so much that it was making me sicker. This was not going to be an easy freight train to shift. (BTW I'm not suggesting this answer is for you or anyone else, in my experience the answers for us are as individual and personal as our relationships with God)
I did make up my mind to try to look for grace in my day, every day. Did I / do I always remember to look for it? No. Is it worthwhile when I do? Yes always, though sometimes very painful too. People say "don't forget to smell the roses" as if roses are what we should always look for. I have found that grace comes in so many surprising and unlikely places and ways that I just ask now to be shown the grace, rather than put my own ideas on what it must or "should" be like.
So here are a couple of pictures of grace which have been shown to me when I've asked (these are physical, but I feel apt metaphors for the grace I've found amidst my suffering).

This is from the log in the river behind my house. During winter I went to the river seeking solace and found these minute fungi growing on "my" log. They are so tiny they are mostly smaller than my little fingernail, and exquisite.

I found this next to a city carpark alongside a littered lane, when I was lamenting to God at how we are trashing the planet - I asked for a sign of grace. Here in an "empty" garden bed which had a broken water meter and some mulch (amongst this sh*t) was life springing forth. Not roses, not smelling pretty, but abundant unstoppable life. I think maybe I'm a human mushroom. 
I also believe my children are gifts of grace. And perhaps your daughter is grace for you?
I agree that God is a force for good. I even suspect that God would not argue with you about being a "bastard for what he's allowed". Free will is such a gift of enduring love and hope, when we might have been made obedient automatons instead. So he tied both his hands behind his back - and cries broken-hearted with us, beside us, inside us - for the deep wounds we suffer and carry. I struggle to explain it with words, it is a felt sense with my heart that God is with us holding us through it all, longing to stop it NOW and yet the intervention would be to change us into robots.
I have cried and raged at God over many things, hurts of my own & of others. I have yet to be struck down for my raging. Instead I have been struck by the transformation in me which has come when I have been prepared to bare my all before God and demand - "I am bl99ding, help me!"
I am not a believer in quick-fixes generally, though it hasn't stopped me from asking for them still. I begged God to save me from my mother when I was 11, I needed an instant answer. Instead I received a journey, it took me 40 years before realising that my prayer was answered in the only way it could be (unbeknown to me my step-father & his new wife were willing to adopt me, that would have killed me). I don't have pat answers, not even for my own journey, let alone others'. I can only try to explain what I have found. I hope it makes some sense, or better still is of some help.
Ashes
All I can taste are ashes
Chalky and grating
Bitter in my mouth
All I can smell are ashes
Smoking and choking still
Everything reeking of death
All I can see are ashes
Blackening every horizon
Burned beyond redemption
Near forty years in the wilderness
Searching for an answer to my prayer
I’ve nothing to offer but ashes
So I keep giving You
Ashes weighty as millstones
Hanging my head in shame
You hold my hand
To lead me on a different path
Showing me what you’ve sown
From offerings I believed worthless
You’ve grown a towering forest
Of glorious Mountain Ashes
Kristin © July 2013
I think it is amazing... that hope endures
Kindest regards,
Kristin