From:
Bernier, Oliver "Secrets of Marie Antoinette: A collection of letters" Fromm Int'l : New York, 1986

Page 176-177:

Marie Antoinette to Maria Theresa
Fontainebleau, 17 October 1775

	Will Madame my very dear Mother accept still my homage for her birthday?  I am ashamed of offering it so late: it is certainly not forgetfulness: I thought that the courier would come four days earlier.  I need all my dear Mama's indulgence for that mistake...
	The marechal du Muy's death is dreadful, especially for his wife, whom everyone loves for her sweetness and politeness.  My dear Mama would be touched by the terrible state she is in.  She only found out that they were operating on her husband when she heard his shouts; as she came into the room, she fell on the doorstep, where she stayed during the entire operation, which lasted for thirty-five minutes.  He suffered unbelievable pain and died within twice twenty-four hours.  It is feared that the marechale will not long survive him; that is her only desire.  The King has given her a 10,000-franc pension when she married; he has just now given her 30,000; there is no example of this kind of generosity to the widow of a minister who was in the place for so short a time; she deserves this exception, and she can never be as well treated as I wish her to be.
I will have nothing to reproach myself with when it comes to the choice of a new War Minister; I am pleased with the attentions and respect shown me by M. de Maurepas, who first told me what he thought before he had come to any conclusion and then told me about the decision he was suggesting to the King.  It is M. de Saint-Germain, who had left the service of France for that of Denmark.  This is being kept absolutely secret until his answer is received. It is not known whether he will accept.  I have nothing to say, either for or against, since I only undertook to respect the secret and do not know him at all.
	Monsieur and Madame returned on the second of this month, very pleased with their trip.  Some people amused themselves by spreading rumors, according to which we were on bad terms; I can assure my dead Mama that this is not true and that we are very friendly.

Page 180:
	"M. de Saint-Germain is starting on great reforms in the troops and the King's Guards; he intends to increase the army by 40,000 men without its costing the King anything more..."

Page 188:
	
Marie Antoinette to Maria Theresa
Versailles, 15 May 1776

Madame my very dear mother,
	...M. de Malesherbes left the ministry yesterday; he is replaced by M. Amelot.  M. Turgot was dismissed the same day' M. de Clugny will replace him.  I can tell my dear Mama that I am not sorry about these dismissals, but I had nothing to do with them... *
	Although that business was about Massines is of little importance, two ministers, MM. de Vergennes and de Saint-Germain, are concerned with it; I saw them again this morning and was promised it would soon be resolved.  Will my dear Mama allow me to kiss her?  My respect and love.