A Change of Heart (Heartsong Presents)

is book #133 of the Heartsong Presents line.
==Book Description==
When Laura Well's father is unable to accompany her on a much anticipated cruise, Graham Kirkland, an acquaintance, agrees to chaperon Laura and her bubbly friend, Kathi. Although Laura has trusted no one since her mother's death, as Kathi and Graham begin to date, Laura also pairs off to make a foursome. But Laura cannot deny her love for Graham, or her awkward feelings when she learns he is a Christian. Turbulent waters are ahead as Laura must learn to release her anger toward God. Can Laura's heart really change? More important, will Graham realize the new Laura Wells?
(Description from paperbackswap.com)