With a newly renovated backdrop of painted butterflies in the background and nearly every seat in the house taken, author Rachel Yoder sparked conversations about motherhood, taking risks in fiction and what it’s like to see your work adapted for the big screen. On Oct. 28, Yoder visited Buffalo Street Books to discuss her debut novel, “Nightbitch.” The book follows a struggling mother who starts to suspect that she is turning into a dog, a thought that her frequently out-of-town husband dismisses as mere fantasy.