Hello, Welcome to Health Care Magic I can understand your concern. She is suffering from depression and now she has developed symptoms like violent, abusive behaviour especially against your father. Such symptoms can also occur in bipolar disorder and need proper evaluation. She is not ready to visit a psychiatrist which also points toward some possibility other than depression. In my opinion she should be treated with proper medicines. As she is not getting ready to consult a psychiatrist in such case you can visit to a psychiatrist along with your father for medicines. Some times in case of a psychotic patients medicines can be given by mixing with food. Risperidone or Olanzapine can help her, these medicines are also available in tasteless and odourless forms which can be given to patients by mixing with food. These medicines will reduce her anger and she would become agree to visit a psychiatrist. Discuss with a psychiatrist for her treatment and prescription of drugs. Thanks, hope this helps you