Your Issues ?
1. In what way the boy will approach the court for getting divorce from her - on what basis under the court of Law. ?
He can file Divorce petition under section . 13 (1) (ia) (ib) of The Hindu Marriage Act, 1955, Grounds of Cruelty and desertion.
2. In what way the girl will approach the court for getting re-union or getting maintenance amount by the way of Divorce or conjugal rights/judicial separation. - Already four years over.
She can file Restitution of Conjugal rights under Sec- 9 of The Hindu Marriage Act, 1955, for rejoining him and also she can file maintenance petition. She can file these petitions even there is a lapse of 4 years by alleging reasons and cause of actions favour her.