Hello Friend, Good that you are seeking a help here. Chronic headaches needs proper diagnosis to identify any physical body condition that is causing headache. Otherwise, she may be having some emotional issue that at time reflects as headaches. In anycase you need do a first level assessment of her  condition to identify the right treatment plan. Take the first step to isolate any mental disturbance by consulting a psychologists which should not be expensive. Feel free to reach out to me online for this assignment. Also, I can guide you on ayurveda alternatives that can help with home remedies and self therapies.