I guess she was expecting them to pay her another $700k to speak and they didn't produce the cash.
Hillary showed us exactly what she was made of last night. Her followers were expecting her to say something to them and she never showed. The ritual of accepting defeat by the loser never happened. Instead she sent out John Podesta to say something to them. Tell them she wasn't coming. She didn't bother with the difficult task of thanking the folks that took the time to be there for her. Many of them expecting a party and instead got an ass-whipping.
Cher showed up at the event, saw the way the election was going, turned around and left. At least Cher showed up. Hillary couldn't face the crowd. So she let them down. How ironic, because that's all I expected from this woman.