Whilst at Rudolfingen, the holy maiden was brought in contact with the Pietists of Schaffhausen. She attended their prayer-meetings and expositions of Scripture. This deepened her religious convictions, and produced a depression in her manner that struck her sisters when she visited them. In answer to their inquiries why she was reserved and melancholy, she replied that God was revealing Himself to her more and more every day, so that she became daily more conscious of her own sinfulness. If this had really been the case it would have saved her from what ensued, but this sense of her own sinfulness was a mere phrase, that meant actually an overweening self-consciousness. She endured only about a twelve month of the pietistic exercises at Schaffhausen, and then felt a call to preach, testify and prophesy herself, instead of sitting at the feet of others. Accordingly, she threw up her place with her uncle, and returned to Wildisbuch, in March, 1817, when she began operations as a revivalist. The paternal household was now somewhat enlarged. The old farmer had taken on a hand to help him in field and stable, called Heinrich Ernst, and a young woman as maid called Margaret Jäggli. Ernst was a faithful, amiable young fellow whom old Peters thoroughly trusted, and he became devoted heart and soul to the family. Margaret Jäggli was a person of very indifferent character, who, for her immoralities, had been turned out of her native village. She was subject to epileptic fits, which she supposed were possession by the devil, and she came to the farm of the Peter's family in hopes of being there cured by the prayers of the saintly Margaretta.