It begin's with Dolly's discovery that Stephen has slept with the French governess, but Oblonsky is happy when he learns that his sister will visit.  
The author of this novel used himself as the model for the farmer who writes love poems in chalk to his fiancee.  In its final part, essentially an epilogue, that farmer experiences an epiphany while talking to Thedore and then rushes home to make sure his wife and child are not hurt in a thunderstorm.  It begin's with Dolly's discovery that Stephen has slept with the French governess, but Oblonsky is happy when he learns that his sister will visit.  A happy ending comes for the sub-plot dealing with Kostya's initially unrequited love for Kitty, but the primary story of the woman who leaves her husband for Vronsky, is a tragic one.  FTP, name this novel in which the title character throws herself under a train, a work by Leo Tolstoy.
The author of this novel used himself as the model for the farmer who writes love poems in chalk to his fiancee.  
Anna Karenina