https://www.amazon.com/Sword-Peace-Louisa-M-Bauman-ebook/dp/B079QWFXPN
This book is on sale on Amazon for $0.99 (regularly $3.99) 3/11/2018 - 3/13/2018!
In 1531 the Reformation is raging in Europe and heresy is being purged from Charles V's empire 'on which the sun never sets'.
Anna tries to stay out of the clutches of the authorities after finding out her best friend has joined a heretical new faith, the Anabaptists, who later became the Amish and Mennonites.
She can't betray Maeyken, so she casts her lot with the radicals, questioning the choices she made, while falling in love with one of them.