Is she not becoming more desperate as the evening progresses????

She knows she burned her bridges with the three amigos.
Lisa and David have looked increasingly suspicious(even appalled) from time to time the last couple of days.Roddys alternated from self preservation to self righteous mode.Is bea sensing she might not be safe from noms????
As a behaviourist this could be very intersting as she resorts to increasingly bizarre justifications for her behaviour.