welcome to H C M
Thanks for your query
Your wife is suffering from vaginal infection
. It may be fungal or bacterial.
She may take these ayurvedic medicine-
1) Patrsngasava 4 teaspoon with 1/2 cup of water 2 times a day.
2) Strirasayan vati 2 tab 2 times in a day after meal.
3) Chandraprbha vati 2 tab 2 times in a day after meal.
You should also consult gynecologist.
No home remedy works in this case.
Avoid spicy and sour food.
Maintain personal hygiene.
I hope this will help you.