Don Lynch (who knew Edwina and the details of her story better than anyone else) believes that she was in Collapsible D instead of boat #13. Don once told me that he'd like to write a brief essay for my website detailing the evidence pertaining to Edwina's lifeboat, so I'll let the ET board know when (or if) he gets around to writing the article in question.
Edwina told me about Bailey, too. (When Don and I visited Bailey's daughter in England, she also mentioned that her father was in #16.) I don't know everything that Don knows about Edwina, though, so I'll wait to see what he has to say about the matter.