There are thousands of child abuse stories / memoirs on Amazon. A Child Called It is known nationwide, hugely popular, and Amazon carries it just fine. Especially in the context of a memoir, child abuse isn't prohibited at all.
I googled and apparently I mis-remembered, it's actually titled "A Child Called It", but hey... it's been a couple decades since then.
She'd also just pull over the car on the side of the highway and tell me to get out and whore myself on the street if I was so ungrateful to be "a part of the family". The whole forcing you to beg for the privilege to stay thing... She'd pull it so often that I kept a bug out bag packed in my closet in the hopes I could just grab it and run. Packed with all the things a child thinks they'll need if they strike out on their own - like a single change of clothes, a handful of change, and a stale ziploc bag of snacks. I even thought I could cut my hair and dress as a boy so that police would have a harder time identifying and returning me.
The Kindly Ones by Johann Littell, certainly hard to swallow.
If you want something really hard, it doesn't get much worse than this autobiography (!!): http://www.amazon.com/Child-Called-Childs-Courage-Survive-ebook/dp/B004FN1T3K/ref=asap_bc?ie=UTF8
Honestly, it's hauntingly terrible to read, I would not recommend to read it unless, you have a good way of dealing with things like that. It's not a horrorstory, it's something that actually happened to the author when he was a helpless child.