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In page Mary of the Divine Heart:

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While at school, she contracted pneumonia and, shortly before her 18th birthday, returned home to recover. In 1883, at the chapel of the Castle of Darfeld, she is said to have had a vision of Jesus Christ who told her: "Thou shalt be the wife of my heart".[citation needed] On 5 August of that same year, on the Silver Jubilee of her parents' marriage, Maria told them of her desire to become a religious.