Her eyes are well forward of her shoulder; she may even be doing the turtle move (to prevent double-chins; I try to do it in every frontal portrait I'm in). Shoulders are probably a good 7 to 10cm behind the eyes, so well out of focus. Arms come forward a bit and back into the plane of focus.

Secondly, these are 4x5 portraits (not medium format), which means they were probably shot with a view camera. Such things allow you to control the plane of focus by tilting the lens, which allows (for example) a photo with the eyes in focus but everything else (below the nose and above the fringe) dramatically blurred. Not the case here, but it's an option.