Her enquiries into the nature of true religion were attended with their natural and usual effects, in opening and enlarging her notions beyond the contracted pale of her own church. For in her letter of the 7th of July 1705, to Mr. Burnet, she says, 'I am zealous to have you agree with me in this one article, that all good christians are of the same religion; a sentiment which I sincerely confess, how little soever it is countenanced by the church of Rome.' And in the latter end of the following year, or the beginning of 1707, her doubts about the Romish religion, which she had so many years professed, having led her to a thorough examination of the grounds of it, by consulting the best books on both sides of the question, and advising with men of the best judgment, the result was a conviction of the falseness of the pretensions of that church, and a return to that of England, to which she adhered during the rest of her life. In the course of this enquiry, the great and leading question concerning A Guide in Controversy, was particularly discussed by her; and the two letters which she wrote upon it, the first to Mr. Bennet, a Romish priest, and the second to Mr. H----, who had procured an answer to that letter from a stranger, Mr. Beimel's indisposition preventing him from returning one, were thought so valuable on account of the strength and perspicuity of reasoning, as well as their conciseness, that she consented to the importunity of her friends, for their publication in June 1707, under the following title, A Discourse concerning a Guide in Controversies; in two Letters: Written to one of the Church Church of Rome, by a Person lately converted from that Communion; a later edition of them being since printed at Edinburgh in 1728 in 8vo. Bishop Burnet wrote the preface to them, though without his name to it; and he observes, that they might be of use to such of the Roman Catholics as are perswaded, that those who deny the infallibility of their church, take away all certainty of the Christian religion, or of the authority of the scriptures. This is the main topic of those two letters, and the point was considered by our author as of such importance, that she procured her friend Mrs. Burnet to consult Mr. (afterwards Dr.) Clark upon it, and to show him a paper, which had been put into her hands, urging the difficulties on that article, on the side of the Papists. The sentiments of that great man upon this subject are comprised in a letter from Mrs. Burnet to Mrs. Trotter, of which our editor has given a copy, to which we refer the reader in the 31st page of his account.