Took 18m/o DD to soft play this morning, wasn't too busy. She was watching another child playing on a small slide. Other child got upset about this and hit DD quite hard and repeatedly on the top of the head.
I intervened told other child firmly not to hit and removed DD from the situation. She was upset but no lasting damage. Couldn't see other child's carer/guardian anywhere and they didn't appear when the incident happened.
I've never really been in this sort of situation before (first child) and I wondered what other people would do in that situation? Should I have found the guardian and told them what happened? Or does this thing happen all the time and other parents/guardians deal with it themselves?