I'm not going to stop wandering toddlers from leaving the play area at the mall
Why wouldn't you help them?
I'm not the best babysitter to be honest...
Children can be difficult to handle especially if you are not used to them but you shouldn't let a child get in a dangerous situation without stopping them. People will think that you are heartless for letting a child get hurt.
I'm not heartless, I can tell this kid is just going to go to the bathroom.
Well if you don't think they are in any harm then I think it's fine. It's not up to you to take care of someone else's child.