Title: The Driven Clouds
Description: [Not my words, but the book's description (: Hopefully that helps.] 
Following an accident in the radiographic department where she works, Monica had gone to South Africa to forget. There is no lackof suitors - Tissiot Blake is a 'dream,' but Monica is just not interested. Then she meets a doctor who badly needs a qualified radiographer. Reluctantly, Monica agrees to help. But then her sister arrives with a face from Monica's past: a face she would rather forget.