Not at all, it's her responsibility to know when to stop. Yes the bar should also step in and stop her if they deem it necessary, but first and foremost it is always the responsibility of the person to make sure they're not doing something stupid. Or at least if they do, that they won't whine if they get themselves in trouble through it.
Since when did the idea of personal responsibility disappear? Do you really want every single move we make to have to be approved and checked before it's done? Let people make their own choices, but if they do something stupid then the blame is on them.