Depends on what class they are from. If they are third class, probably a good clip around the ear would have been the solution. If they are first class, probably more likely to be a "quick, get out of sight of the other rich people so we can avoid the stares and embarrassment" type scenario. ;-)
Ah - George. Hello.
I think most 13-year olds would already have had a clip round the ear in their childhood, no matter what class they were. The majority would have succumbed - meekly or resentfully - and a minority, of any class, would have been rebelling. In my own family, I have examples of each from the early 20thC, and class doesn't really explain the response, either at the time, or later.
True, I agree most kids would have out grown the clip on the ear and as young adults or teens would of been reasoned with if they were having a rough bit of teen angst. Although I am sure there were teens who still got a clout for speaking out about something. Especially on the Titanic as the ship was sinking and folks were getting stressed.