Because she's a Clinton.
And you would do well to never forget or diminish that fact.
Even the Clintons can’t defy political reality. Any other candidate would have gotten out of the race after losing Texas, but Hillary stayed in. For some, the Clintons have taken on mythic proportions, but I see them as having feet of clay. The very fact that a first term Senator with very little political experience could take on the Clinton political machine and beat them at their own game speaks volumes about the Clintons and what was supposed to be just a coronation of Hillary.