Yes, that is indeed her. Thanks again.
The newspaper reference is especially interesting for what it omits. No mention of any children of Annie Calvert Gleig Scott or Oliver.
No mention of six more nephews and nieces, the children of their (deceased) brother George Gleig Scott, who seems to have been the black sheep of the family.
Also, the omission of references to children of Annie, Edith, or Calvert (Calvert was their brother; Edith's middle name was Grace not Calvert) means that it's probably not a case of me having failed to find them, but of there being no children to find.
And Mary's father Arthur must also have died before 1933. What a lot of useful non-information
