Hi... Please consult a Psychiatrist, she needs a proper Psychiatric assessment.
If she isn't willing to go to a Psychiatrist, you can alone visit and share her symptoms in detail. The Psychiatrist may prescribe some medication and may guide you on how to administer it, if she is unwilling.
Please do not hesitate to consult a Psychiatrist, as this may be due to ageing or some other underlying Psychiatric or Psychological Condition.
Next Steps
Consult a Psychiatrist immediately and a Psychologist for Counselling later.
Health Tips
Mr. Gunjan Maithil
Senior Psychologist
Cell: Nine Six Seven One Three Zero Three One Three Four (whatsapp)
Website:
https://gunjanmaithil.wixsite.com/therapy
App: http://wix.to/fECHB08?ref=cl