She's obviously not a natural politician, which is the point she was trying to get across. There are straight talkers like Trump, Dubya, Sanders, Perot, Jerry Brown et al, and there are Strategic Communicators like Obama, Bill Clinton, Kerry, Hillary, Cruz, and countless others, who make their decisions based on polling and political calculation. Nothing wrong with either method, they're just different strokes for different folks.
In Hillary's case, she has been beaten up by the GOP's vast right wing conspiracy crowd for years, which has been an extension of the GOP's long standing hatred of Bill's Presidency and his politically active wife. There are a lot of things Hillary needs to fix going forward imo. She has to start being a bit more assertive about her own policies and not getting outdueled in the anger and populism departments.