Does the book have a motion-picture analog?

No. The final film made by the late French New-Wave auteur Alain Robbe-Grillet, Gradiva (2007), captures some of the same style and sensibility—a nebulous search; present but imprecise menace; somewhat surrealistic & hallucinogenic. Also, the Gradiva legend, strange enough to have fascinated both Freud and Dalí, is dreamlike, much as the experiences that Sabrina undergoes. (See the accompanying tableau-vivant-like still from the movie: you can see how it would have appealed to those two dream-obsessed figures from the last century). But as an analog it soon breaks down—different stories, settings, underlying themes; Floreat Lux has other sources.