What is the meaning of "lecture-agent" here? Do author wants to say that the failure of her lecture is because of funds?
To give greater authenticity to the interview, at her suggestion the following open letter was written to which she placed her signature: 128, West Forty-third Street, New York City, November 16, 1889. TO THE PUBLIC. The foregoing interview having been read over to me I find nothing contained therein that is not a correct record of my words and truthful expression of my sentiments. I have not given a detailed account of the ways and means which were devised to bring me under subjection, and so extract from me a declaration that the spiritual phenomena as exemplified through my organism were a fraud. But I shall fully atone for this incompleteness when I get upon the platform. The exactness of this interview was testified to by the names of a number of witnesses, including J. L. O'Sullivan, who was U.S. Minister to Portugal for twenty-five years. He said, "If ever I heard a woman speak truth, it was then." So it may have been, but the failure of her lecture-agent to keep her in funds seems to have been the determining factor.