The same ardour which she had exhibited in the passions of her youth she now expended on the passion of her maturer years. Both her words and actions are henceforth inspired by religious enthusiasm. She divides her time between devotional exercises and charitable deeds. Her whole previous life seems to her to have been nothing but error and foolishness. Her whole life now is but one feeling, love to her Saviour. "I have not a thought except to please, to serve, to sacrifice everything to Him through whose grace I desire nothing except to be allowed to love all my fellow-men, and who shows me nothing in the future but glimpses of bliss. Oh, if men but knew the happiness of religion, how they would shun every care except care for their souls!"
Such was Madame de Krüdener's state of mind when, travelling once more in the autumn of 1806, she met and became intimate with Queen Louisa of Prussia. It was not long after the battle of Jena. The Queen, in her deep dejection, was peculiarly open to the persuasion of Madame de Krüdener's glowing religious eloquence, and Madame de Krüdener gained great influence over her, and through her over the King. We have proof of this in a letter from the Queen written some time afterwards. "I owe to your kind heart a confession which I am certain will cause you to shed tears of joy. It is that you have made me better than I was. Your straightforward words when we talked together on the subject of religion and Christianity have made the deepest impression upon me."
Madame de Krüdener went to Karlsruhe on purpose to see Jung-Stilling. Jung-Stilling had made a literary reputation for himself by the book in which he gave an account of his early life as a pious journeyman tailor. As a medical student at Strasburg he had associated with Goethe and won his favour. After practising successfully as an oculist, and holding a professorship of political economy, he had become a kind of prophet among the Pietists of South Germany, and was honoured as a saint by the pious court-circle and nobility of Baden. His character was not strong enough to stand such adulation, and he had degenerated into a vain and unreliable old twaddler, who boasted of his knowledge of the other world and revealed the hidden mysteries and designs of God by means of interpretations of the Revelation of St. John. To Jung-Stilling Madame de Krüdener now did homage as her master and guide. He had a weakness for the admiration of great ladies, and a close friendship sprang up between them. The venerable ghost-seer was at this time writing his _Theorie der Geisterkunde_ (Theory of Spirits). Madame de Krüdener was firmly persuaded of the truth of one of his wise predictions, namely, that the millennium was to begin in the year 1816, or 1819 at latest.