Wallis was more of a realist than sentimentalist. I think she grew to love him and depended on him (more than she realise). She did not need photos of Edward, since she saw him on a daily basis. Edward on the other hand (like most of Queen Mary's sons) had this "mother" complex that needed reconfirmation on a daily basis (interesting that Camilla seems to be doing that role for Charles now). It was no joke when Wallis told her friends that it is not easy to live out "the romance of the century". She was expected to be the strong one, the keeper. Even Queen Mary, later in life realised this trait in her sons, and made a final gift of reconciliation of a pearl necklace to Wallis. I think the old Queen would have liked to tie up the loose end with her eldest son, but did not due to consideration for King George VI and Queen Elizabeth (Queen Mum). It was perhaps fate that the Winsors's first official appearance in Britian was to open a plack dedicated to Queen Mary. She most certainly would have approved.