The Imposter, Bishop's Family Series by Suzanne Woods Fisher and published Revell.
Katrina Stoltzfus thought she had life and love all figured out: she was going to marry John and live happily ever after. Those plans started to crumble when her father moved the family to Stoney Ridge, then completely collapsed when John decided to marry someone else. Katrina is devastated. How could she have felt so loved, yet been so deceived?
As she struggles to face a future without him, a widow asks for her help to start a new business and Katrina quickly agrees. She needs time to heal her broken heart, to untangle her messy life, to find a purpose. What she doesn't need is attention from Andy Miller, a farm hand who arrives at the widow's farm just when help is most needed--and who always seems to say the right thing, and be in the right place, at the right time. Is Andy for real, or too good to be true? Deceived once before, Katrina is determined to keep her feelings in check.
When a cascade of events is set in motion by some surprising information, the little Amish church is turned upside down. Soon, everyone has a stake in the outcome, and the community struggles to find the best response to an imposter in their midst. Can they forgive even the most deceitful deeds?