>>96436926 (OP)
The nature of the question narrows down the possible context, which is helpful. Her costume doesn't have pockets, so this must not be occurring during hero activities, and she's not much for junk food. So this must be happening while she's off duty. Even so, her pockets would hardly admit a hard candy the size of a jaw breaker. Therefore let's suppose she's at a county fair and has just won a prize of a few jawbreakers, wrapped in plastic, which she stored in her handbag. At some point during the day she has cause to search for something in her bag, maybe one of those novelty maps showing the locations of attractions and other information. While going through the bag she sets out the bag of jaw breakers on her picnic table so it's not in the way, and that's when our thief strikes.
With her five ranks in Perception, along with Acute Hearing, she won't have any trouble following the kid, which she will, more out of curiosity and a little concern than anything. Either this kid is so hungry and desperate they're stealing shitty junk food instead of anything that would actually nourish them, or it's just a kid acting out and stealing for fun, probably because of a bad upbringing. Either way, though, the more pressing matter is, where are the parents? Do they care that their kid is running around unattended in a fair with a lot of potentially dangerous rides that are likely maintained by sub minimum wage meth heads? Do they care that fairs like this are beacons for sex offenders?
Anyway, she follows at a comfortable distance, pretending to be checking out various scam games as she goes, only really concerned that the kid doesn't hurt herself or get abducted. What happens next will largely depend on when and where the child decides to come to a stop. When the kid feels like she's in a place where she can be at ease, she'll be a little less likely to immediately flee. Hopefully the fact that she doesn't fit the profile of a pedophile or crackhead will help.