>>212506580 (OP)I only really liked the ending, particularly the true form of the phantom, or whatever it was.
I understand they were going for a "mental illness causes social isolation" motif but Babadook did it much better. The protagonist in Smile felt forced by the script to always appear as nutso as possible to everyone who might otherwise trust her. The ex-boyfriend would have been a great corroborater of her story, especially if she kept things as dry and technical as possible without screaming and crying like a loon.