Actually, it seems she scored big with the state's superdelegates (state party officials, governor, congresscritters). That's how she got so many delegates. The Dems have a lot more superdelegates than the GOP does.
Wiki:
Note: The Associated Press conducted a survey of Superdelegates over the first few weeks of November 2015.[54] Among the 579 delegates they were able to reach, 369 had committed to a candidate: 359 supported Hillary Clinton, 8 supported Bernie Sanders, and 2 supported Martin O'Malley, who has since dropped out. The AP described these pledges as "public support" but kept the full list under embargo. While some reports based on these results are cited, the figures above remain incomplete.