Hi, in my experience treatment of schizophrenia with Homeopathy is not easy, and since you have not shared what medication she is on, or any of her general details it will be difficult to give an opinion. It would not be a good idea to stop the medication she already is on and start Homeopathy. Instead meet the psychiatrist whose prescription she is on and discuss these issues she seems to be having as a result of the medications.
Next Steps
Meet and discuss the issues with the psychiatrist or meet another for a second opinion.
Health Tips
Homeopathy may be introduced at a later date once she is relatively better. However this should be done with caution and by a homeopath experienced in handling such cases.