Their removal was indeed, as Charles had perceived eight months earlier, the only solution of the difficulty, and to it events were now rapidly tending. It was necessary to cajole the French Court. Buckingham, even before the departure of Blainville, had made fresh overtures to Henrietta, which the astute Ambassador had advised her to reject. After the failure of this ruse the adroit Walter Montagu was dispatched to Paris to speak fair words to Mary de' Medici, and so well did he succeed that cordial letters were interchanged between the Duke and the Queen-Mother, even while, at the same time, the young diplomatist was able to carry out the more secret task which had been confided to him, which was nothing less than to discover whether the state of French domestic politics was such as to make it safe for the King of England to offer to the King of France so grave an insult as the expulsion of his sister's household. Montagu's report was encouraging. Owing to the great favour with which both Queen Anne and Madame de Chevreuse regarded him, he was able to pick up a good deal of information which would have escaped an ordinary envoy; he was thus, no doubt, able to trace in the ramifications of Chalais' plot, which at this time was agitating the French Court, and in which both the above-named ladies, as well as Henrietta's younger brother Gaston, were implicated, not only the general hatred of Richelieu, but even a positive desire on the part of some to see the Cardinal humiliated by such an affront to his policy as would be involved in the violation of the Queen of England's marriage treaty. And with such discontent at home, what vengeance could be taken? "The cards here," wrote Montagu in great glee, "are all mixed up, and Monsieur [Gaston of Orleans] is on the point of leaving the Court."