Hello,
Your wife deserted you without any reason. It seems that she is not interested in continuing the marriage. A divorce petition can be filed by you on grounds of desertion but not before a period of 1 year from the date of marriage.
In exceptional circumstances the court can grant divorce.
If they are not ready for divorce with mutual consent then file an application under section 9 of the hindu marriage act. So that she may come back. If she is not willing then file for divorce on grounds of desertion.
There is no question of maintenance as she deserted you after 4 days.
Regards