But her adversaries were not all within. A hard battle remained to be fought with her father. His opposition was active and relentless. He had at first tacitly acquiesced in her consecration to God in a religious life of some sort; but he believed, as every one else did, that to let her enter La Trappe would be to consign her to speedy and certain death; and when she announced to him that this was the order she had selected, and the one which drew her with the power of attraction, that she had struggled in vain to resist, he declared that nothing short of a written mandate from God would induce him to consent to such an act of suicide. In vain Mary pleaded that when God called a soul he provided all that was necessary to enable her to answer the call; that her health, formerly so delicate when she was leading a life of self-indulgence, was now completely restored; that she had never been so strong as since she had lived in almost continual abstinence (she did not eat meat on Wednesday, Friday, or Saturday); that the weakness of nature was no obstacle to the power of grace, and there are graces in the conventual life that seculars did not dream of, nor receive because they did not need them. In answer to these plausible arguments, the incredulous father brought out the laws of nature, and reason and common sense, and the opinion of the medical men who had attended her in Dublin, and under whose care she had been more or less ever since. These men of natural science and human sympathies declared positively that it was neither more nor less than suicide to condemn herself to the rule of St. Bernard in the cloister, where want of animal food and warmth would infallibly kill her before the novitiate was out. They were prepared to risk their reputation on the issue of this certificate. Mary's exhaustive answer to all this was that grace was always stronger than nature; that the supernatural element would overrule and sustain the human one. But she pleaded in vain. Her father was resolute. He even went so far as to insist on her returning to society and seeing more of the world before she was divorced from it irrevocably. This check was as severe as it was unexpected. Though her disgust to the vanities of her former life continued as strong as ever, while her longing for the perfect life grew every day more intense and more energizing, her humility made her tremble for her own weakness. Might not the strength that had borne her bravely so far break down under the attack of all her old tempters let loose on her at once? Her love of pleasure, that fatal enemy that now seemed dead, might it not rise up again with overmastering power, and, aided by the reaction prepared by her new life, seize her and hold her more successfully than ever? Yes, all this was only too possible. There was nothing for it but to brave her father, to defy his authority, and to save her soul in spite of him. She must run away from home.