Wilkie Collins 
"I Say No" 

This 1884 novel features a young orphan, Emily Brown, who is courted by two eligible bachelors: Alban Morris, the drawing master at her school, and a clergyman, Miles Mirabel. Both claim to love her, but only one is telling the truth . . . and the other may be implicated in the suspicious death of her father. (Goodreads)