An impulse indefinable, yet impossible to be resisted, had caused her to intrust her Agnes to the care of Lady Mary and Nigel, and compelled her to follow her son, who had been the chosen companion of the king. Rigidly, sternly, she had questioned her own heart as to the motives of this decision. It was nothing new her accompanying her son, for she had invariably done so; but it was something unusual her being separated from the queen, and though her heart told her that her motives were so upright, so pure, they could have borne the sternest scrutiny, there was naught which the most rigid mentor could condemn, yet a feeling that evil would come of this was amongst the many others which weighed on her heart. She could not tell wherefore, yet she wished it had been otherwise, wished the honor of being selected as the king's companion had fallen on other than her son, for separate herself from him she could not. One cause of this despondency might have been traced to the natural sinking of the spirit when it finds itself alone, with time for its own fancies, after a long period of exertion, and that mental excitement which, unseen to all outward observers, preys upon itself. Memory had awakened dreams and visions she had long looked upon as dead; it did but picture brightly, beautifully, joyously what might have been, and disturbed the tranquil sadness which was usual to her now; disturb it as with phantasmagoria dancing on the brain, yet it was a struggle hard and fierce to banish them again. As one sweet fancy sunk another rose, even as gleams of moonlight on the waves which rise and fall with every breeze. Fancy and reason strove for dominion, but the latter conquered. What could be now the past, save as a vision of the night; the present, a stern reality with all its duties--duties not alone to others, but to herself. These were the things on which her thoughts must dwell; these must banish all which might have been and they did; and Isabella of Buchan came through that fiery ordeal unscathed, uninjured in her self-esteem, conscious that not in one thought did she wrong her husband, in not one dream did she wrong the gentle heart of the queen which so clung to her; in not the wildest flight of fancy did she look on Robert as aught save as the deliverer of his country, the king of all true Scottish men.