The Forgiving Jar is about Sarah. You learn a bit about Sarah in the first book called The Hope Jar? Wanda does a really well job writing Sarah story along with Michelle's. If you are not a fan of Wanda Brunstetter you will be once you have read on of her books.
The first book is about Michelle Taylor story. This book is about the English granddaughter's story of the Lapps. How would you feel if someone impersonated you? Well this is how it start in the second book with Sarah coming to stay with her grandparents. When you see the woman you pretended to be you and why she is allowed to stay there? Sarah feel really upset about it.
Will Sarah learn to forgive? We know she finds the Prayer Jars or at least one? She doe not know who wrote them or who they belong to? Michelle happens to find Sarah with one of the Jars and tell her she knew about The Prayer Jars and that there is one in the barn as well.
We also get Brad who come back to visit during his Christmas break. He does not know the real Sarah. He thinks the one he meet was Sarah but doe not know it Michelle Taylor. Michelle has to tell him the truth and ask for forgiveness?
Wanda seem continue Michelle's story along with adding Sarah's story. Though this is mostly Sarah story we get to see Michelle live blossom and she how they interact. Will Michelle get to see her brothers Jack and Ernie Taylor? Will Sarah learn to forgive? Will Michelle and Ezekiel get married?