Hillary Clinton isn't a progressive in any way at all. She pushed the actual progressives, especially Sanders, out of the way during the primaries because it was her turn. She's a neocon and her time in office would have been filled with more middle eastern wars (or maybe an exciting war with Russia!) and corporate hegemony-building. Nothing about her political past suggests that she's every even tried to be a progressive. Where are you getting this from?
Progressives didn't fail to vote for her out of apathy, but because she had nothing of substance to offer them. The only votes she got were from party loyalists who looked no farther than the "D" and from lesser-of-two-evils votes against Trump. Very very few people voted for her.