The protagonist is alone after the death of Aksinia and returns to Tatarsk.  
One character in this work bleeds to death after having an abortion performed upon discovering her husband's affair shortly after Daria contracts syphilis and drowns herself.  In this work, the desertion of the officer Bunchuk takes place after one character saves the life of a man whose wife he had had an affair with, Stepan.  That character supports the execution of Podtielkov, and his sister Dunia marries the man who killed his brother, Koshevoi.  The protagonist is alone after the death of Aksinia and returns to Tatarsk.  Following the brothers Piotra and Gregor Melekhov, FTP, name this novel about a Cossack rebellion joining the White Army in the region around the titular river, a work of Mikhail Sholokhov.
One character in this work bleeds to death after having an abortion performed upon discovering her husband's affair shortly after Daria contracts syphilis and drowns herself.  
And Quiet Flows the Don or The Don Flows Home to Sea or The Silent Don or Tikhii Don