A mere "touching" incident huh? The adults didn't choose this. The POS who molested a small child chose this. 

What would ignoring this show the child? "We are just going to pretend this never happened. You just have to learn others can do whatever they want to you. It isn't worth the extra trauma to report this. Your body is your temple unless somebody else wants it." I could go on and on about how traumatic ignoring this would be. Not to mention all the future victims who could be saved by apprehending the pedophile.