In a performance of the latter's Astianatte on 6 June 1727, a riot broke out in the audience between her followers and those of her 'rival' Cuzzoni in the King's Theatre, Haymarket, in front of Caroline, Princess of Wales.
This furore seized the public imagination and a great deal of journalistic exaggeration – the pamphleteer John Arbuthnot published "The DEVIL to pay at St. JAMES's: Or A full and true ACCOUNT of a most horrid and bloody BATTLE between Madam FAUSTINA and Madam CUZZONI", in which he lambasted the two ladies: "TWO of a Trade seldom or ever agree … But who would have thought the Infection should reach the Hay-market and inspire Two Singing Ladies to pull each other's Coiffs, to the no small Disquiet of the Directors, who (God help them) have enough to do to keep Peace and Quietness between them.
… I shall not determine who is the Aggressor, but take the surer Side, and wisely pronounce them both in Fault; for it is certainly an apparent Shame that two such well bred Ladies should call Bitch and Whore, should scold and fight like any Billingsgates."
In 1730, she married the German composer, Johann Adolf Hasse, and the following year the couple were summoned to the court of Augustus the Strong at Dresden, where Faustina enjoyed a great success in her husband's opera Cleofide.
Faustina was, however, permitted to make many long trips to Italy, appearing again in Naples, Venice, Parma and elsewhere in operas by Pergolesi, Porpora and Vinci, alongside those of her husband.
She had a fluent tongue for pronouncing words rapidly and distinctly, and a flexible throat for divisions, with so beautiful a shake that she put it in motion upon short notice, just when she would.
She sang adagios with great passion and expression, but was not equally successful if such deep sorrow were to be impressed on the hearer as might require dragging, sliding, or notes of syncopation and tempo rubato.