[she hates it too, but Magilou has never been known to mince her words]

. . . I'm not convinced the win condition for the killers is just to kill off everyone.

[she had alluded to as much during the meeting, so she doesn't mind being honest about that]

Perhaps they're aiming for another role in particular, but have no way of determining who may or may not have said role. So they can only strike out randomly until they finally hit their target.

Maybe eliminating that role is their true purpose.