Beautiful documentary tells the story of one womanâ€™s heroic battle to find her missing brother and restore his life ATLANTA, Georgia - A SISTERâ€™S CALL, the award-winning documentary brilliantly directed by Rebecca Schaper and Kyle Tekiela, continues garnering prizes at film festivals around the country. A Sisterâ€™s Call can now be purchased online through Pivotshare and viewed on the web and across leading mobile and tablet devices. The film was produced by directors Schaper and Tekiela in association with Kartemquin Films, creators of the 1994 award-winning classic documentary, Hoop Dreams. Kartemquin Films served as an editorial consultant on the project, helping to mold the final product through their world-renowned KTQ Labs program. The group is also helping with outreach as the project moves forward.