While there is a lot I wouldn't say this about, shoplifting is relatively minor enough that - as long as it is clear to the person that they made a big mistake and are punished in some fashion - it is also fine to move on.
We all make mistakes at that age, I did as well, as someone pointed out above. You learn. OR you get in progressively bigger trouble and in the end ruin your life. So I'm with the majority, I am ok with this, provided she learned from it, which of course we will never really know.