Actually, she didn’t concede till almost mid-day.
That early morning hours was podesta at 3am telling everyone to go home.
(I speculate that she had gone on a drinking binge earlier, and was zonked out...and it took till midday to sober her up)
I had gone to bed by then as Pennsylvania was finally announced and pulled Trump past 270. I was a poll worker and had been up since 5:15 am that morning, so I was very tired. Elated, but exhausted.
However, I do seem to recall on the morning news the next morning, the replays of her concession were somewhat equivocal and there was an appearance announce for later in the morning which made it clear.
So your version was spot on.