Option 1

Speak with the teenager privately, express your disappointment, explain the seriousness of their actions, and offer them a chance to pay for the item or return it, possibly with a warning to their parents.

Option 2

Immediately call the police and report the shoplifting incident, following strict store policy without exception, and let the authorities handle the situation.

Option 3

Let the teenager go with a stern warning but without further action, hoping they learn their lesson and don't return to the store.