The Breadth of Heaven — Rosemary Pollock

Could blue blood love any other color? Secretary-companion to a princess! It sounded like a wildly glamorous job, and when the opportunity unexpectedly arose, Kathy jumped at the chance. But there were complications. Coming from a politically unstable country, Princess Natalia was understandably nervous, both for herself and her children. In fact, she seemed to relax only when her brother-in-law, Prince Leonid, was around. But much as the handsome, masterful Leonid's presence calmed Natalia, it greatly disturbed Kathy.

Hero:
Heroine: Katherine "Kathy" Grant