Your mother's persistent fears beliefs about people harming you, black magic, theft, and strong negative feelings toward a daughter-in-law sound distressing and may reflect phobic, anxiety related, or fixed (possibly delusional) fears. These worries are real to her and are causing emotional upset for the whole family.
Next Steps
Arrange a medical review first (general physician) to rule out physical/neurological contributors (e.g.,
thyroid, infections, delirium). Simultaneously, book a psychiatric evaluation to clarify whether these are anxiety, severe phobia, or a psychotic/delusional process that needs targeted treatment. If she is reluctant, consider a home visit by a clinician or start with a trusted family member present. For psychological support and family strategies to manage this, you may consult with me.
Health Tips
Stay calm and avoid arguing about whether the beliefs are "real" gentle reassurance works better than confrontation. Document examples (times, triggers, behaviours) to share with the doctor. Maintain a consistent routine, ensure she has good sleep and nutrition, and reduce stressors at home. If she becomes agitated, frightened, or a risk to self/ others, seek urgent medical help or emergency services. Family counselling can also help reduce conflict and improve support for her recovery.