The Hospital of Fatima — Isobel Chace

Katherine was going to live in Tunisia because old Monsieur Edouard de Hallet, who had left her his estates there, had made it a condition in his will.

But she had reckoned without the old man's disgruntled niece, Chantal, who could -- and did -- do everything to make life unpleasant for her.

Hero: Dr./Doctor Guillaume de Hallet (Peter)
Heroine: Nurse Katherine Lane