Yes, I've seen those little snippets.
I know quite a lot about Beulah and her family. She grew up in Truk, Micronesia where her parents were missionaries. Her father, Robert W. Logan, was very well known in the missionary business and Beulah and her brother followed in his footsteps, at least for a while. To this day, the Protestant church on Truk is named the Logan Memorial Church. Beulah really was once shipwrecked in the Mortlocks [a group of small atolls south of Truk], rescued, and taken to Australia to recover. After that, she returned to the United States, married a wealthy businessman [Tuthill], and gave talks on the subject of foreign missions. She even helped the US military in WWII because she had detailed personal knowledge of many of the atolls and lagoons in Micronesia.
After her marriage, Beulah lived in Chicago and it is very likely that she really did speak at the Methodist camp and, it wouldn't be surprising that she mentioned the shipwreck incident. However, the real shipwreck did not involve cannibals, a German gunboat, and so on. So, either Beulah totally lied about the events of the wreck or a reporter embroidered her story to make it more exciting. I think the latter is more likely. So I'd like to know what she actually did say.
Beulah died not long after I was born and so I never knew her but I do vaguely recall my grandmother mentioning her in conversation. If she had really had an encounter with cannibals, I think the story would have become part of family lore and I'd have heard about it as a child.
Here she is:
