This is the third novel by Frances "Fanny" Burney, originally published in 1796 (LibriVox).
"This is the story of Camilla, her beloved but selfish brother Lionel, her sisters Eugenia and Lavinia, and their extremely beautiful but thoughtless cousin Indiana on the months proceeding their marriages. Camilla is deeply in love with Edgar and he loves her back. However, on the advice of a friend, decides to make sure that she is free of fault. She has the luck to find herself in lot of uncomplimentary and comic situations which doesn't make Edgar's wish easy. Meanwhile, Camilla, on the advice of her father, is trying to make sure that Edgar really loves her before marrying him" (LibriVox).