Tilly. Edwardian Candlelight 4

The fourth book in M. C. Beaton's charming Edwardian Candlelight series. The Beast; that was what they called her. With her plump body and rough tomboy ways, she felt more like a clown. It was hopeless. Poor penniless Tilly could only sit among the chaperons as a paid companion to the spiteful Lady Aileen. The best she could do was sit; sit and dream. But suddenly Phillip, Marquess of Heppleford, the most eligible bachelor of all - decided he wanted her for himself, to be his wife, and they were married.
His intent was to keep his freedom, fulfill the conditions of his father's will, and shock his aunts. He never imagined he'd return from a scandalous adventure in Paris only to find a seductive beauty - a beauty who had learned that loving well is the best revenge. The Edwardian Candlelight Series chronicles young, passionate girls who come to understand the nature of true love despite overwhelming odds.
From a penniless pauper, a stenographer, a governess to an accused murderess, these ladies in love overcome incredible odds with grit and sophistication to find and keep true love.