If she was a manifestation of the island like Walt then by 'it' trying
to get Juliet to kill Faraday and the redhead it was trying to leave
Ben with the option of gassing everyone? So It's willing to kill to
protect itself from outsiders? I guess thats the case because Locke
said 'Walt' told him to stop the black chic from contacting the ****p
at all costs.