Lady Isidore was married by proxy as a child. The years tick by as she waits for her husband to return from the Nile or wherever he is currently exploring. She successfully fends off amorous men while living the life of not quite a duchesses and not quite a spinster aging on the shelf. When she puts into action a desperate plan to lure her husband home (see Duchess by Night), she pr finds him ordering her home with him pronto. He finds a lady very beautiful and with fiery temper that goes off at him, not the docile obedient wife he expected. Fireworks go off with this couple.
4th in the Desperate duchesses series.
If you like Mary Balogh, try Eloisa James. For the Desperate duchesses series start with Desperate duchesses.
When the Duke Returns / Eloisa James 384 p.