Moon Over Africa — Pamela Kent

Elizabeth's journey to Cape Town included the very reverse of a shipboard romance, for a lively mutual dislike was established between her and a certain tall, dark passenger, the handsome South African Nigel Van Kaner. So it was a shock to her to learn on landing that there was a very close connection between this man, and the father she had come so many miles to see. To her dismay, she found her ailing father was dependent on him, and she, too was in his debt. His marriage proposal was practical, with never a word of love. Nigel offered Elizabeth security, but she wanted love. But then, he didn't deny being in love with someone else!