It had lately occurred to her that her mind was a good deal of a vagabond, and she had spent much ingenuity in training it to a military step and teaching it to advance, to halt, to retreat, to perform even more complicated manoeuvres, at the word of command. Which statement best describes what the metaphor her mind was a good deal of a vagabond tells you about Isabel? A. Isabel has trouble focusing on a task. B. Isabel cannot understand what she reads. C. Isabel cannot find a good place to sit and read. D. Isabel has trouble remembering what she reads.