Hi,
I understand your concern, but to help you more details are required like, age, height, weight, biochemical parameters, dietary habits etc. A proper balanced diet should be followed by a geriatric person, specially which rich in vital micro nutrients like different vitamins,
calcium, iron etc along with good quality protein, which boost immune system and maintaining functions of vital organs at the same time. Include more fresh fruits and vegetables in daily diet and should have a sound sleep about 6-7 hours.
Next Steps
If you want you can chat directly with me on practo for further discussion.
Health Tips
Indulge her to do different activities which make her happy and feel free, because stress, anxiety only have negetive effect on health.