Mione's forfeit for losing the argument is to sit on Malfoid's face, which she cannot do without being told twice, and then does not want to stop.

It is the first time all night she has been in charge of anything and she takes to it immediately and badly.

MioneI do not know how long to — is there a rule for how long —

MalfoidThere is no rule. You decide. That is the entire difficulty.