Actually the motel date was on Friday night, sorry.
I just looked back in one of the first articles. So Amber claimed that Friday was the last time she saw the baby, when she went for the date at the motel.
That is also around the same time the neighbor says she saw her carrying the baby in an awkward way out to her car.
Maybe the father was out of town at that point, and didn't return until the next day.
If the neighbors account is accurate, then Ambers story of RL having the baby and never dropping the baby off at the baby sitters is not true, as Amber had the baby herself. Imo