Lady Philippa Gillensford is three and twenty, an heiress, and sister to a penny-pinching earl. After rejecting every bachelor her mother approves of, Philippa is ready to take her future into her own hands. Though she doubts she'll marry for love, she is more than willing to marry for freedom from her family's influence.

Myles Cobbett has withdrawn from Society, content to remain alone after surviving the horrors of the Napoleonic wars. When a friend convinces Myles to attend a ball benefiting wounded veterans like himself, Myles meets the lively Lady Philippa. Shortly thereafter, to help Philippa avoid scandal, Myles rescues her from a complete cad.

Sensing a chance to escape her family's control, Philippa convinces Myles he must marry her to save her reputation. In exchange for this favor, Philippa promises him the very thing he thought he always wanted: a quiet life, alone in the country.

While the two put on a show of marital happiness for their neighbors, both realize they want much more from this arrangement. Can they take a marriage of convenience and turn it into a love match?

Her Unsuitable Match is a sweet Regency romance and can be read as a stand-alone or as the sequel to Sally Britton's previous novel, His Unexpected Heiress.