This question is incomplete. Despite the question not providing the reference selection, we can infer the answer by the theme of Gothic literature
Answer: Martha’s suspicion that Gus is haunting them will be reinforced by further mysterious events.
Explanation:
Modern Gothic literature is a genre characterized by suspense and fear around something supernatural. Knowing that, as well as Tom and Martha´s bad luck, and Martha’s ideas about Gus haunting them, we can infer that the ghostly story can only lead to more mysterious events.
The resolution being Martha’s therapy or Tom´s new job would not be suitable for this genre.