Because I Am Furniture - Thalia Chaltas

Because I Am Furniture covers so much in such a short novel, written in verse. 

Here Anke deals with an abusive father, beating her brother and raping her sister. Her family remains silent as his abuse worsens, fearing his wrath should they anger him further by telling.

The saddest part of this story for me is that Anke feels that her father loves her less because he doesn't include her in his outbursts or molestation. 

Finally, after he has broken her leg, Anke's family had no choice but to admit what he'd been doing to them. 

What the book never says, and I was wondering the whole time, was what made her father this way? I can understand that drinking excessively can make someone angry, even abusive, but it does not make them rape their child on a nightly basis. I wish the story had included that.