Do you have a source about Col. Yay?
Apparently it is forbidden to create a Wiki about her. She has a circa 1950 autobiography that was recently reprinted by Rutgers University Press titled The Crucible: An Autobiography by Colonel Yay, Filipina American Guerrilla
The book is expensive but the original and re-issue are available at public libraries via interlibrary loan.
Here is a link to the re-issue: http://books.google.com/books/about/The_Crucible.html?id=dPzaSf7VmrUC
Amazon also has the re-issue: http://www.amazon.com/The-Crucible-Autobiography-Filipina-Guerrilla/dp/0813546826
If it wasn't for her pro-Americanism, she's a non-white heroine, a reporter, a spy, is respected by her men, leads and kicks male butt in battle and even has romance. What more could Hollywood ask for in a script? If it just wasn't for her pro-Americanism.
Here's the dust cover from her original book: