TORONTO (AP) — The day after the premiere of their film “Nightbitch,” Amy Adams and Marielle Heller are sitting in a Toronto restaurant reflecting on all that went into, as Heller puts it, “birthing” a movie that captures some of the truest, rawest but seldom Instagrammed things about early motherhood. Their film, which writer-director Heller has described as a comedy for women and a horror film for men, stars Adams as a woman credited only as “Mother.” With her husband (Scoot McNairy) often away on work (and when he’s there, he refers to solo parenting as “babysitting”), Adams’ character experiences a wide range of emotions raising a newborn. She is exhausted and resentful.