Ellise Shafer Nicole Kidman won the best actress prize at Venice Film Festival for her performance in “Babygirl” on Saturday night, but was not on hand to accept the prize because of some devastating news. After Kidman’s name was announced, “Babygirl” director Halina Reijn took the stage and delivered written remarks in place of Kidman, revealing that the actor had traveled to Venice to attend the ceremony but had to leave due to news of her mother’s death.