A shaky narrative is given ballast by two vivid and well-matched leads in Sabrina Doyle’s exasperating, sporadically touching feature debut, the blue-collar melodrama Lorelei. As former high school sweethearts reconnecting amid dire socioeconomic circumstances, Pablo Schreiber and Jena Malone hustle to overcome movie-ish dialogue and clichéd story dynamics, investing their life-bruised characters with authentic feeling.