Read it through once

“What—is it ’Liza-Lu?” asked Tess, in startled accents. Her sister, whom a little over a year ago she had left at home as a child, had sprung up by a sudden shoot to a form of this presentation, of which as yet Lu seemed herself scarce able to understand the meaning. Her thin legs, visible below her once-long frock, now short by her growing, and her uncomfortable hands and arms revealed her youth and inexperience.