The unsatisfactory situation, apparently, might have continued indefinitely, for, even if Montagu had been more pressing, Lady Mary, in spite of her independent attitude, was most reluctant, indeed, almost determined, not to marry without her father's consent.
In the early summer of 1712, however, Lord Dorchester created a crisis. Thinking, perhaps, that his daughter might one day get out of hand and, in despair, defy him, he decided to find her a husband other than Montagu. At first, from a sense of weariness and from filial duty, Lady Mary inclined to obey the parental injunction--to her father's great delight. All the preparations for the wedding were put in train--then, ultimately, Lady Mary declared that she could not and would not go through with it on any terms. Who the bridegroom was she does not mention, but, in a manner somewhat involved, she in a letter in July, 1912, confided the whole story to Montagu.
"I am going to write you a plain long letter. What I have already told you is nothing but the truth. I have no reason to believe I am going to be otherwise confined than by my duty; but I, that know my own mind, know that is enough to make me miserable. I see all the misfortune of marrying where it is impossible to love; I am going to confess a weakness may perhaps add to your contempt of me. I wanted courage to resist at first the will of my relations; but, as every day added to my fears, those, at last, grew strong enough to make me venture the disobliging them. A harsh word damps my spirits to a degree of silencing all I have to say. I knew the folly of my own temper, and took the method of writing to the disposer of me. I said everything in this letter I thought proper to move him, and proffered, in atonement for not marrying whom he would, never to marry at all. He did not think fit to answer this letter, but sent for me to him. He told me he was very much surprized that I did not depend on his judgment for my future happiness; that he knew nothing I had to complain of, &c.; that he did not doubt I had some other fancy in my head, which encouraged me to this disobedience; but he assured me, if I refused a settlement he had provided for me, he gave me his word, whatever proposals were made him, he would never so much as enter into a treaty with any other; that, if I founded any hopes upon his death, I should find myself mistaken, he never intended to leave me anything but an annuity of £400 per annum; that, though another would proceed in this manner after I had given so just a pretence for it, yet he had [the] goodness to leave my destiny yet in my own choice, and at the same time commanded me to communicate my design to my relations, and ask their advice. As hard as this may sound, it did not shock my resolution; I was pleased to think, at any price, I had it in my power to be free from a man I hated. I told my intention to all my nearest relations. I was surprised at their blaming it, to the greatest degree. I was told, they were sorry I would ruin myself; but, if I was so unreasonable, they could not blame my F. [father] whatever he inflicted on me. I objected I did not love him. They made answer, they found no necessity of loving; if I lived well with him, that was all was required of me; and that if I considered this town, I should find very few women in love with their husbands, and yet a many happy. It was in vain to dispute with such prudent people; they looked upon me as a little romantic, and I found it impossible to persuade them that living in London at liberty was not the height of happiness. However, they could not change my thoughts, though I found I was to expect no protection from them. When I was to give my final answer to----, I told him that I preferred a single life to any other; and, if he pleased to permit me, I would take that resolution. He replied, he could not hinder my resolutions, but I should not pretend after that to please him; since pleasing him was only to be done by obedience; that if I would disobey, I knew the consequences; he would not fail to confine me, where I might repent at leisure; that he had also consulted my relations, and found them all agreeing in his sentiments. He spoke this in a manner hindered my answering. I retired to my chamber, where I writ a letter to let him know my aversion to the man proposed was too great to be overcome, that I should be miserable beyond all things could be imagined, but I was in his hands, and he might dispose of me as he thought fit.