No Night is Too Long– Barbara Vine " Writing this down won’t stop the letters — there have been three more since the one from San Francisco — but it may help to lay his ghost. The dreams, after all, come only by night, when I’m in bed asleep. His ghost appears to me everywhere and at any time. He, it, whatever it is, a figment of my brain, the creature of my guilt, he never shows himself to me directly but always in the corner of my eye, on the edge of my vision, or very distantly as it might be along the beach by a breakwater or across the High Street, reflected obliquely in a shop window"

How does the writer use language here to describe how the narrator is feeling?