Angelique Jackson When “Nanny” writer-director Nikyatu Jusu got a message from the Sundance team in late January asking to jump on a call, the first time filmmaker realized that the project must’ve won an award, which would be presented publicly the next day.First, Jusu thought that the prize might go to the film’s star Anna Diop, who’d been earning rave reviews for her performance as Aisha, a Senegalese woman who recently immigrated to America and begins working for a wealth family on the Upper East Side in New York City. Then, she speculated the prize could be for cinematographer Rina Yang’s work lensing the film, which would be a win for the whole team.