The correct answer is: The narrator feels inadequate when she reports seeing a supernatural being and nobody believes her.
Alice tries to find an explanation of what she witnessed before, but nobody is willing to participate in giving her one or to fully explain her the whole situation as she is new and not worthy of knowing everything yet. Wharton tries to portray the reality of the era she lived in, known as the Gilded Age, a period of time when the problems were disguised or covered by the societal practices happening in the privileged circles. Her writing has been considered as gothic but is more a representation of a psychological approach to horror during the 20th century. In these stories, the author shows her own fears and feelings from her early experiences with supernatural situations, but never fully understood the unconscious implications those memories had on the fact of adding ghosts to her writing.