A three-hour extended version of Margaret was released in August 2008 on DVD .
`` Lonergan completed a three-hour extended version incorporating extra footage with revised score and sound mix , which was released on DVD in July 2012.The film 's title is drawn from Gerard Manley Hopkins ' poem `` '' Spring and Fall : to a young child '' '' , which is discussed in Lisa 's English class . ''
Margaret -LRB-2011 film-RRB-