AAAUUUGGHHHH!!!!!
NO ONE is saying the little girl did anything wrong!
The debate here, (and it is not criticism of anyone) is whether or not the owner should be notified and does the owner have the right to have his property returned.
What I'm saying is that if my trashcan blows on to your yard, you do not get to keep it. If it breaks a window on your property, you should be compensated, but you don't get to keep my trashcan. Same thing with an animal that belongs to me , but harms your property. You get compensated if harm is done, you are justified in killing it if it goes after your animals, but you do not get to keep it, it is still my animal.