Mandie and the Secret Tunnel

is the first book in the Manide series.
==Book Description==
Mandie Shaw, almost a teenager, is certain God no longer loves her as she watches her father being lowered into his grave. Mandie's move into a neighbor family's home, when her mother remarries, does not soften her grief. Her only comfort is the promise from her father's faithful Cherokee friend, Uncle Ned, to watch out for her and be a friend. Will Mandie be able to escape her new and nearly intolerable home situation? Will she find her long-lost family? Will the mysterious key unlock the door to the secret tunnel and her own family's history?
(Description from Amazon.com)