Stone of Help by Robin Hardy

This is a continuation of the Chataine's Guardian series. The beginning of the book find the Chataine pregnant and disgruntled with her live. In an act of rebellion, she demands to be left unattended or guarded. She asks for a moment alone by the lakeside. Unfortunately, her act of rebellion results in her being lured away into a trap. A trap that results in the loss of her baby and freedom. She is sold into captivity and begins to blossom into a woman who follows God. Her time in captivity is not lost, as she grows and learns that even in captivity she can be a blessing to others.