What a horrible thing for your family & for your cousin

Hasn't happened to us, although I have my worries at times, DD1 has taken off to friends houses before but in the heat of the moment, not running away as such.

Inanna is right there is a lot going on in their heads, and the thought processes are very different to us as adults. I can't imagine what your aunt & uncle are going through...

hope she is found & everything settles down soon. I am guessing they have called / visited all her friends?