I think I wasn't looking far enough into the 20th c. I was so frustrated that I couldn't find travel info.
The reason I've been researching her is that I am writing a book on a 20th c. American missionary, Margaret Gaines, who served first in Tunisia, then in Jerusalem, then in Aboud, Palestine. She worked for over 40 years in that village of Aboud. When she arrived in 1964, there had been no Protestant work there since that of an English missionary, "Miss Nicholson" in the early 20th c. "Miss Nicholson" was well-respected by all. So, I started searching for any mentions of her. I found numerous ones in missionary periodicals, mostly published by the CMS, that described her work, first with the Jaffa Medical Mission. I went to the Church Mission Society archive in Birmingham, but she was not registered as a CMS missionary. I went through reels of microfilm of letters sent to the Palestinian offices during that time period and finally found one with her initials. But even with that, I wasn't able to find her full identity. Then I found some references to the Palestine Village Mission and the Yale Divinity School archive had some records of PVM. The archivist there sent me copies and found that she was listed as "foundress," but still no full name. So, your hard work has filled out the picture for me. I have looked for records of Mildmay Deaconesses, but the earliest ones don't seem to exist; some later ones are housed in the archives of The London Hospital. When I finally get this published, I'll be sure to give RootsChat full credit!