Ah, thank you for the ideas! I like the second and third ideas - the character I have in mind is very sweet and caring (all the more heart-wretching to watch scream and wail) so the last 2 suit her more than the first.
Can you tell me more about your second idea - the one where they have to take the electric shocks for the other person? How does that work?

I haven't decided where the electrodes would go but yea... Probably nipples... XP