While he is away, his father Giorgio initiates a dialogue with "Pura siccome un angelo," in which he explains that young Mr. Germont's relationship with the title character may jeopardize the chances of his sister marrying.  
This opera was a dud on opening night because of the extremely obese soprano, who was dying of an unknown disease.  In the complete version, the lead tenor rushes to Paris in Act II, responding to news that the title character has been selling her possessions so they can live in the country in "O mio rimoroso!"   While he is away, his father Giorgio initiates a dialogue with "Pura siccome un angelo," in which he explains that young Mr. Germont's relationship with the title character may jeopardize the chances of his sister marrying.  Despite admitting that she suffers from consumption, FTP, Violetta Valery leaves her lover Alfredo and later dies in what Verdi opera?
This opera was a dud on opening night because of the extremely obese soprano, who was dying of an unknown disease.  
La Traviata