She ultimately undoes her enemy with a bit of snuff, which causes him to sneeze violently, while Thalestris attacks Clarissa, who had earlier provided Lord Petre with the tools to commit the titular crime.  
In his letter to this work's addressee the author advises her to consult the book Le Comte de Gabalis.  The main plot in this work is partially precipitated by the discovery of a letter sitting next to "puffs, powders," and "bibles."  One of the protagonist's friends asks for help from her brother, Sir Plume, who goes to the villain.  In section three the protagonist engages in an activity in which participants "raise/The silver lamp" on "Altars of Japan," ombre.  She ultimately undoes her enemy with a bit of snuff, which causes him to sneeze violently, while Thalestris attacks Clarissa, who had earlier provided Lord Petre with the tools to commit the titular crime.  FTP name this poem in which the Lord cuts off a piece of Belinda's hair, a work by Alexander Pope.
In his letter to this work's addressee the author advises her to consult the book Le Comte de Gabalis.  
The Rape of the Lock