The Walking Dead: Who is Mary?

Maggie, Glenn and their motley crew of tagalongs have arrived at Terminus finally, presumably just ahead of Rick, Carl, Michonne, Tyreese, Carol and Judith.And there to greet them? A seemingly-idyllic setting, not heavily fortified but instead rather like a small, enclosed rural village with plenty to eat……and Mary, whoever she is, cooking at a grill and ready to greet their arrival.Of course, we’re thinking the same thing you are right about now: who the heck is Mary? And we came up with a few ideas…