Management of Cumulative trauma disorders

25/F has pain in levator scapular region on left side since 4months. She works in a food factory and has moderate to light tasks to be done for 8hours a day. Constant pain was 40% Onset- patient made theplas for 2 hours continuously after which she started getting constant pain for which she had pain killers for a week but to no relief. After a week, physiotherapy started Examination- Swelling seen on levator scapula region. Posture mildly protracted shoulders All shoulder n thoracic ranges were full. Cervical right wide flexion was minimally reduced with pain on left upper trapz region. Muscle strength- Levator scapula n upper trapz- tight Middle trapz lower trapz - weak All other girdle n shoulder muscles were weak as compared to her right side. Worked on those muscles and posture correction. Counselling for rests in between and reduced physical tasks. Intermittently physiotherapy was stopped by the patient and now her pain is reduced to 10% with heaviness in that region felt constantly. Her work profile has changed to computer work for 8 hours a day. Pain increases only when she does any physical work for more than 30mins. Pain subsides after she stops the work in another 30mins. Please advise further management of this patient and your views on it.