Darling Cassidy (Heartsong Presents) (The St John Family Saga)

is book #424 of the Heartsong Presents line.
==Book Description==
When Cassidy Sinclair agrees to meet Wendell St. John III, she has no idea of the adventure she is about to face. The needs of a guilt stricken widower and his four motherless children, as well as the dangers of life on a prairie ranch, will challenge her faith as nothing else has before. Will the pain of her new family's past haunt Cassidy's future? Or will she ultimately find the love for which she has always yearned? 
(Description from paperbackswap.com)