I'm fascinated by the subtle differences between Maggie's right and left eyes in this picture; I sense that her left eye is open just a wee bit more than her right, which if she was right-handed could possibly indicate she trusted whoever took this photograph.
Maggie's smile is on the tight-lipped side, which might either indicate she was self-conscious about her teeth, or possibly that she was raised in a culture that emphasized characteristics such as humility and modesty and prudence above such things as joyfulness or succumbing to spontaneous bursts of wild abandon.
The carefully woven braid gracing her head like a crown is indicative of hairstyles from an earlier era, so at the time of this photo when Maggie might perhaps have been in her 70's around 1955, she was indicating greater comfort with hairstyles from her youth.
The biggest feelings I get can't be traced specifically to any particular details in the photo. I get a sense that Maggie knew much more than she let on---she could keep a secret. I sense she had a true inner reserve of strength, so as a result she was a much greater opponent to anyone making the mistake of turning against her. And I see that Maggie had a deeply caring and sensitive side that she may have shown to a few of her closest family and friends.
There are so many amazing clues about Maggie in this photo, giving some proof to the old adage that a picture is worth a thousand words--thanks so much for sharing this photo of Maggie with us!