She found the website of Wilford Whitaker, the great-grandson of Priscilla Heiler, the daughter of Hans Conrad Heyler, who was the brother of Bernhard Heyler, Sr., my eight-times great-grandfather. My mom had done a search on GoodSearch.com for the name of the book, Broad Bay Pioneers, the author and the name Hyler. This returned the following result:
Mom was very excited to see this book, which is written from the perspective of Priscilla Hyler Robinson and tells the story of her family's journey from Switzerland to Germany and then to Maine (then Massachusetts) in America. Priscilla's grandson, John Robinson, converted to the Mormon church and moved west with them. It is thanks to this family, their memories and research, that I'm now finding all of this information on my ancestors.
I have sent an email to the address on the website, and hope to hear back soon from these very distant cousins.