The Sea at Dawn — Laurie Paige

RAIL THIN, MODEL PERFECT
A woman didn't have to be those things to be beautiful, Melba knew. As a psychiatric nurse, she had to convince her eighteen-year-old charge of this. She had to build up Adriane's fragile self-esteem.

But Adriane's uncle, Roth Webster, wasn't helping with his array of gorgeous model "friends." So when Melba suggested he choose a woman not quite so intimidatingly perfect, he agreed. Then he chose her, and she found herself pursued by a master of seduction. Melba knew his kisses were for his niece's sake, so how could she be so foolish as to wish they were all for her?

Heroine: Melba Holly