Was Stacy originally planning to go home that night?

I mean, is they were all planning to drive to Branson that night, wouldn't Stacy have taken a bag of clothes and a bathing suit with her for the trip? A lot has been made of her clothes being left in Suzie's house meaning that she would have been taken in nothing but a t-shirt and underwear. If the plan was to travel that night, wouldn't she have made up an overnight bag, meaning she would have had other clothes with her to wear?