She's from my DS's primary school and has been round a couple of times. Today she came round with her cousin, there were also three other play dates here - I do have a bit of an open house policy for the local feral kids. 
She asked about where my ipod was and I told her it was in my bedroom. Half an hour later, she had been sneaking around the place so I had an uneasy feeling and went to check that the Ipod was still in its case - it was. Then the other two kids arrived, there was a bit of coming and going and she and her cousin left. You know when you get that gut feeling? I got it, and sure enough, the ipod wasn't there anymore.
I screamed and shouted about it, all the kids ran down the road after her, I told them to tell her I'd call the police if the ipod didn't turn up and then five minutes later after I'd got my shoes on, I went down the road and heard the ipod playing - luckily it had been turned on and left in the front garden of another house. Whoever had taken it had obviously got frightened and decided to abandon it.
So. I've got my ipod back. The question is, should I call the police? Is it worth following up? Is this enough of a fright for her not to try this again, will I start her on a life of crime if I don't? I'm also aware that it may not have been her - there were after all, other children in the house and it might have been any one of them (except that I don't think it was). I kind of think that if it were any of the other kids, they would also have a bit of a wake up call if I call the police, although I also know that as soon as I report it, I have no control over what the police will do - do I really want an eleven year old to get a criminal record because they stupidly acted on impulse and then got scared? Am having a dilemma about this, WWYD?