There is a bravery in “Sorry, Baby” that comes not from what the film shows, but from what it withholds. Written, directed by, and starring Eva Victor, it is one of the most talked-about indie films of the year, winning the Waldo Salt Screenwriting Award at Sundance and gathering momentum with nominations, including nods at the Golden Globes and Gotham Awards. The film is both incisive and tender in its exploration of trauma, friendship, and the long, winding road toward healing.