Changes From a Sunset, by Aileen Friedman-Naude

Tali’s commitment to God has wavered for a long time, much to the dismay of her parents. When her surfer boyfriend Cole starts searching for salvation, Tali is drawn back to her Saviour to serve Him.
Just as Tali and Cole’s lives become increasingly perfect a series of events happen within a short space of time.
Out of these enormous trials facing Tali, a friendship grows unexpectedly with surprising results.
Tali has to get strength from her family, her friends and colleagues, but mostly she has to rely on God.