Hi thanks for posting your query.As you have mentioned that your wife is suffering from mild headache .According to my opinion there are many causes of headache like aggravation of vayu and pitta impairs digestion leading to ama or toxin formation in manovahi strotras or nervous system
I am suggesting you few effective remedies for headache
Put 1-2 drops of medicated Anu oil into both nostrils.
Head massage with brahmi and bhringraj oil daily.
Practise yoga ,pranayam,asanas like bhastrika,anulom vilom,bhramri,
meditation,shavasan,yoga nidra regularly.
Shirodhara( pouring of medicated oil into forehead) is an effective panchkarma procedure.
Avoid pitta aggravating diet like tea,coffee,non veg,alcohol,spices
Consume more alkaline diet and less acidic diet like
aloe vera ,amla ,gulkand,coriander,cu umber,mint,coconut water.
Avoid processed food like cheese.
Avoid exposure to sun.
Take herbal medicines like sutshekhar ras ,
pathyadi kwath,praval pishti,shiroshooladi vajra ras.
If headache doesn't subside then get MRI ( brain ) done or
consult a neurologist.
Hope you are satisfied with my answer.In case of any further query you are welcome to ask anytime.
Best wishes for your health
Take care.
Regards
Dr.Pallavi