You might want to consider the way in which Lawrence describes the figure of Mabel as she sets herself on her course to killing herself. Note the way in which the powers of the imagination are exerted through the description of when Ferguson sees Mabel working at the grave of her mother:
She seemed so intent and remote, it was like looking into another world. Some mystical element was touched in him. He slowed down as he walked, watching her as if spellbound.
References to "another world" and a "mystical element" in the sight of Mabel tending her mother's grave definitelys serves to develop the use of the imagination in this description of her as a solitary but also incredibly alluring figure. References in the next paragraph, which is when the two see each other, to the way in which Ferguson is "mesmerised" by Mabel's eyes and their "heavy power" likewise serve to clearly establish the way in which the power of the imagination is summoned up by Lawrence as he, in this instance, describes the impact of Mabel upon Ferguson.