I suggest watching PBS' Frontline episode on this:
http://www.pbs.org/video/2365848966/
I see a lot of those complaints of her being "manufactured" and not sincere. You know what, she is. Not because of some nefarious desire to dupe or con but out of necessity. From the Frontline Ep you see the transformation of her from when she was a much much outward idealist to where she is now. She's someone who was dragged for not baking cookies as 1st lady, for daring to speak up on women's rights in China, for fighting for the poor for much of her adult life. She worked as in on the ground personally) to break down segregation in schools in the south receiving public funds. She fought against sodomoy laws still on the books in the 90's. Yet she was always dogged by made up scandals and undue scrutiny for simply sticking up for other people. That stuff has taken a toll on her over her years as a civil servant and public life. Again even though it would be easy to fade off into the sunset she still is back up in the spotlight.
You have to understand her journey and her nature to see why she appears as she does now. She is a fighter, and someone who always gets back up even when not expedient to do so. That's why she jumped in with Obama's admin, why she has fought for gay rights even if she wasn't always on for full marriage recognition. Even after 9/11 she was one of the first and the loudest to get the framework and precursor to the 9/11 first responders bill. She actually went up against the Bush admin calling them out for lying to 1st responders over the quality of the air and dangers they experienced at the site of the WTC.
Is she perfect, no she has many flaws and has made mistakes. What I know her to be is someone who will fight for the smallest person in the room, no matter the cost to herself. Which is why i think she'll make a great President.