Complex sentence: It was likely written with the help of Colleen's friend Adele Rogers St. Johns; in her photo-captions, she is often either identified as "me" or "Colleen Moore," indicating more than one person writing the captions.
Split into simpler sentences: It was likely written with the help of Colleen's friend Adela Rogers St. Johns. In the book's photo-captions, she is often either identified as "me" or "Colleen Moore," indicating more than one person writing the captions.