My horror movie pitch

As a lonely timid widow Rosa struggles through the depression of middleclass life in the small deserted town of Jingleberry, whilst mourning her husbands mysterious sudden death. She urges to find out the truth and tries to defend her husbands reputation against the ruthless locals. But as she digs deeper into the truth, and new secrets are revealed, she is visited by an unwanted visitor and is brutally attacked.
One evening fighting for survival, she is luckily saved by her distant neighbour and is relieved when her stalker is brought to justice by death. But can justice be brought to the death? Rosa's life spirals further down as she is drove to insanity as her attacker stalks her and terrorises her through her dreams, as the hallucinations become more realistic.