Ruth Schoff is in my family also, and can be found in the book "The Descendants of Jacob Schoff who came to Boston in 1752 & settled in Ashburnham MA in 1757" BY: Willfred H. Schoff.
You can read this book online at; archives.org You don't need an account with them, just look up the above mentioned book, in the search for all media. Ruth Schoff is on page #94.
I have another booklet about the Schoff family, that is more about Franconia, NH, the place Jacob Schoff Settled. Not much is mentioned about Ruth & John, other that what is in the Descendants book. If you are interested in the Schoff family, my family goes to the annual Schoff gathering in Franconia, NH, every summer, and I would be happy to share any info I gather. Please feel free to e-mail me at; firstname.lastname@example.org
(feel free to check out my family tree; Schoff/Bailey. Dessaint/Palmer.)