Reading two books about Gina Rinehart back to back is far from edifying. So rich, so controlling, so opinionated, so entitled – and these are among her less objectionable qualities, as described in the two biographies published since she burst into the headlines amid reports of family litigation, media buy-ins, and escalating wealth. Indeed, whatever she did would captivate widespread interest, given that her worth ballooned from a tidy $900 million in 2006 to $20 billion this year.