Romance novel set during french revolution with female version of the scarlet pimpern
I read a trilogy of romance novels set during the french revolution around 15 years ago. The heroine was like a female scarlet pimpernel and was possibly called something like Lady Caro; she is a member of the English aristocracy. She falls in love with a man who is part of the french revolution and so she is fighting against him.
I absolutely loved these books and have been trying to remember the titles or author for ages now but have not been able to and have been unable to find any clues on any search engines so I am praying that somebody knows these books and can help