Mercy To Maria Theresa, 7 June 1774
HM often sees in her cabinets the princesse de Lamballe, nee princesse de Carignan; she is sweet, pleasant, no intriguer, and quite without drawbacks. For some time already, the Queen has felt real friendship for this young Princess and her choice is an excellent one because Mme de Lamballe, though a Piedmontese, is not at all close to Madame or the comtesse D’Artois. I have still taken the liberty of pointing out to the Queen that her inclination and her kindness to Mme de Lamballe demanded some moderation so as to prevent any abuses.
Secrets of Marie Antoinette, A Collection of Letters - Olivier Bernier