As the information provided it seems she has early stage of dementia, reason for dementia is multufactorial ranging for
Vitamin deficiencies B1,
B12, D3 ( thiamine in some cases if there’s H/O heavy alcohol ), endocrinological to metabolic to vascular to genetic like Alzheimer’s
Next Steps
Kindly visit a psychiatrist for a detailed history of pt, evaluation of current symptoms, medical co-morbidities, Blood Ix and if needed neuro imaging, medications will be started accordingly.
Health Tips
Just giving thiamine supplementation will NOT be helpful