My Sister Age 35 Unmarried Height;health Normal Fair Complexion Suffering

My sister age 35 Unmarried height;health normal fair complexion suffering from paranoid schizophrenia;complaining black magic by neighbour & saying possessed by them I am trembling get a pandit worshipworship at home to get rid from their possession& uses to much water for washing; for bathing etc. Suggest me right homoeopathic mds.I am not getting result from homoeopathy.she is take allopathic mds.