No vest and her arm is not bent in conformity. Defiant, if not an aberration.
Using this larger photo to make the following observation. DM said SADO was 4th from right.
“Stanley Ann (top row, fourth from right, without vest)”
You identified that young woman as Maxine Box (post #1461)-—as depicted in what we can see.
BUT, look at the “official” names and the placement of commas after each name. The original picture had 22 girls -— 11 in each row.