Scout is a girl with a day off and a lot of money on her person, in small bills. Instead of doing something productive (like what, exactly? Compared to her usual day, this was productive. Normally anyone would be lucky if she rolled out of bed before 5 in the evening, just to throw on some clothes (barely) and hit the clubs.)
Okay, so this is sort of productive. She's out of the house while it's still light out! Productive! Nevermind that she's blowing cash on crap she doesn't really need.
She stops outside the little boutique, because it looks cute and funky and cute and funky is what Scout does when she's not trawling the $5 hooker stores. She pops into the little store in her skinny jeans and fluorescent bag, her ridiculously bright pink hair piled in a ponytail high on her head. Dinagaling! You have a customer!