Thanks to fellow researcher Afonso Silva, I have an idea of the back story of Helen Hoag, this mystery woman of past lives exploration. Afonso found a relative of Helen's who sent us some of her booklets, which are out of print and very hard to find. I was scanning them for the archives when I came across the acknowledgements to "Dawn of Creation" in which she thanks William Swygard "who perfected the "Awareness Techniques" and also Diane Swygard. So in 1968 when she wrote this text, she was acknowledging their contribution to the work, but not in later editions, maybe assuming that people knew about this? So, no longer a mystery woman but a member of the Miami group that Swygard referred to and thanked for their participation in Book 1.
Asking questions and following bread crumbs with Afonso Silva cleared up one mystery and gave us insight into what was happening in Miami in the late 1960's that birthed this amazing technique.