Plain Truth (Plainly Maryland #3)
Susan Lantz Simpson

To avoid shunning, KatieAnn travels to the Southern Maryland Amish community where her older sister, Rebecca, lives with her husband and six children. As the holidays approach, KatieAnn is helping out at the family's community store and developing a romance with Luke Troyer when items go missing from the store.
How will KatieAnn clear her name before she is branded a thief by yet another community? And will she be shunned before she can convince others of the truth?