The seed has been planted, MacKensie might actually choose to help Chatak over the Witch [i]and[/i] the Empire.  Unity will sound preferrable to her.  Right now though, with next-to-zero information and no time to sit and think, she's a bit ignorant to everything and just wants to get away from the giant graveyard.  But it's all getting through her skull - Yakeru's teleport, Jared's split personality, David's identity issues, the Witch's strange methods - she will eventually be addressing it all, I'm not ignoring the detail in all of you guys' great posts.