So it turned out she did not get an extra day of liberty. They flew out today (Saturday), per usual.
In fact, the group that was flying to Pensacola on the 1220 flight left Great Lakes for Midway at 0030. Yikes! Daughter called us around 0230 and told us where they'd be. We met her in the ticketing area around 0430 and got a gate pass so we got to spend the morning with her until she had to board.
It was absolutely wonderful to be with her again and see what a fine sailor she's become.