The River by Beverly Lewis and published by Bethany House.
Formerly Amish, Tilly Lantz Barrows and her younger sister Ruth Lantz find themselves plagued by the memories of their family's trauma when they return to Eden Valley for their parents' landmark wedding anniversary. Each woman carries a burden of past guilt, unknown to the other, along with unresolved relationships with their six married brothers...and ageing parents. Headstrong Tilly urged Ruth to flee the People as well, welcoming her into the fancy English world. Neither had joined the Amish church. Tilly has since married and is the mother of identical twin girls. But Ruth remains single, still smarting from a failed courtship with her first beau. When she sees Will Kauffman again, old feelings resurface, leaving her to ponder anew how things might be different had she stayed in Lancaster County.
Meanwhile, Tilly is faced with a life-altering discovery that calls everything she knows into question. As past meets present, Tilly and Ruth struggle to find redemption and embrace acceptance. Can they face the future in the light of a past they can't undo?