Further annoyance with myself. After hunting around extensively I was unable to find the photo. It may well have been that I was confusing Pauline with another 1st class "mother", or else I was relying on what others had told me about her appearance and had simply conjured up an image in my mind! Anyway, I'll get back to you on this..
The photo of Pauline was taken when she was in her 70's-circa 1939. I have her death certificate (after a long, frustrating search with governmental agencies that were somewhat less than cooperative). But that information is being saved for some consolidated publication along with details of the deaths of others such as Rosa Abbott, Mrs. Cassebeer, etc. But rest assured, she has been tracked down.