Suddenly, in 1635, the Inquisition undertook to investigate her. There had been nothing exceptional in her career, except its success and, under Franciscan management she had been mostly kept clear of the errors condemned in Pacheco's edict. The motive for action is obscure, and the most probable suggestion is that the opponents of Count-Duke Olivares had sought, after the fashion of the time, to make use, for political ends, of the boundless popular veneration of which she was the object. Yet there was significant caution in the preliminaries. Juan Santos, senior Inquisitor of Valladolid, was ordered to examine her, when he pretended a visit to the Bishop of Palencia and on the road stopped for a fortnight at Carrion. It was not difficult to involve an untutored nun in erroneous theological speculations, and a warrant for her arrest followed; she was placed in a carriage with a female relative of one of the inquisitors, when her journey to Valladolid was a triumphal procession. A pillar of light, changing into a cross, was seen in the sky; everywhere the population gathered in mass, and the precaution of entering Valladolid at night was unavailing, for the crowds were so great that she was with difficulty carried in safety, through the surging mob striving to gather some fragment of her dress as a talisman. She was housed in the Augustinian convent, where she was the object of veneration to the nuns, who declared her destined to be the most powerful saint in the annals of the Church; but it was observed that she no longer had ecstasies, although at Carrion they had been of daily occurrence and were celebrated by sounding the organ, when everyone rushed to see them.