Why not? Her supporters blame Trump on anyone who ever thought about voting for Sanders in the primaries, regardless of who they voted for in the general, and have for nearly 8 years now.
Sanders campaigned for her in states she ignored because they were full of worthless flyover hayseeds who were beneath her. Her campaign didn’t seem to understand how the electoral college functions.
Her campaign WANTED to go up against Trump because they were unforgivably stupid enough to think that Republicans would be less energized by a charismatic con man than by Jeb Bush, Republicans’ presumptive frontrunner that no one wanted.