A professional Photo shoot for one model with a couple of wardrobe changes takes a minimum of 4 hours assuming everything goes smoothly which it never does. 6 to 8 hours is typical. Initial makeup along takes almost an hour. It also takes time for the model and photag to sync. It would not be uncommon for a model to come home with makeup on and to be exhausted and ready for a bath. Not saying that is what she did but it could be possible