Too unattractive to entertain any hope from her own pleadings with Henry himself, she once more turned in this new difficulty to Madame de Verneuil, who, in order to display how little she had been mortified or annoyed by the coldness of the Queen, and at the same time to prove to her that where the earnest entreaties of the latter had failed to produce any effect, her own expressed wish would suffice to ensure success, immediately bade Leonora dry her eyes and prepare her wedding-dress, as she would guarantee her prompt reception of the royal consent upon one condition, and that one so easy of accomplishment that she could not fail to fulfil it.
Marie de Medicis had been heard to declare that in the event of her becoming the mother of a Dauphin, she would, at the earliest possible period, dance a ballet in honour of the King, which should exceed in magnificence every exhibition of the kind that had hitherto been attempted; and the condition so lightly treated by the favourite was no less than her own appearance in the royal ballet, should it indeed take place.

Even La Galigai herself was startled by so astounding a proposition; but she soon discovered, from the resolute attitude assumed by the Marquise, that her powerful intercession with the King was not otherwise to be secured; and it was consequently with even less of hope than apprehension that the agitated Mistress of the Robes kissed the hand of Madame de Verneuil, and assured her that she would leave no effort untried to obtain the consent of her royal mistress to her wishes.

But when she had withdrawn, and was traversing the gallery which communicated with the apartments of Marie, she began to entertain serious misgivings: the pretension of the Marquise was so monstrous, that, even conscious as she was of the extent of her own influence over her foster-sister, she almost dreaded to communicate the result of her interview, and nearly despaired of success; but with the resolute perseverance which formed so marked a feature in her character, she resolved to brave the utmost displeasure of the Queen rather than forego this last hope of a union with Concini.

It was, nevertheless, drowned in tears, and with a trembling heart, that she presented herself before Marie as the voluntary bearer of this new and aggravated insult; while, incomprehensible as it must appear in this age, whatever may have been the arguments and entreaties of which she was clever enough to avail herself, it is at least certain that they were ultimately successful; and that she was authorized by the Queen to communicate to Madame de Verneuil her Majesty's willingness to accede to her request, provided that the Marquise pledged herself in return to perform her portion of the contract.
That her partiality for her early friend induced Marie de Medicis to make, in this instance, a most unbecoming concession, is certain; while it is no less matter of record that, probably to prevent any opportunity of retractation on the part of Madame de Verneuil, she lavished upon her from that day the most flattering marks of friendship, and publicly treated her with a distinction which was envied by many of the greatest ladies at Court, even although it excited the censure of all.[141] The comparative tranquillity which succeeded this new adjustment of the differences between the Queen and the Marquise continued until the month of September, on the 17th day of which Marie became the mother of a Dauphin (subsequently Louis XIII), at the palace of Fontainebleau, where, as had already been the case at the Louvre, the apartments of the favourite adjoined her own.

Nothing could exceed the delight of Henry IV at the birth of his heir.