The most important requirement for grant of divorce by mutual consent is free consent of both parties. .It is clear that one of the parties may withdraw their consent at any time before the passing of the decree. In other words, unless there is a complete agreement between husband and wife for the dissolution of the marriage and unless the court is completely satisfied, it cannot grant a decree for divorce by mutual consent.
The Conditions required under section 13B of the Hindu Marriage Act are as follows:
(i) Husband and wife have been living separately for a period of one year or more,
(ii) That they are unable to live together,
(iii) And that both husband and wife have mutually agreed that the marriage has totally collapsed, hence marriage should be dissolved
There are two court appearances in a mutual divorce. First a joint petition signed by both parties is filed in court. At the first motion statement of both parties are recorded and then signed on paper before the Honourable Court. Then 6 month period is given for reconciliation, and called after six months. After the first motion or at the end of the reconciliation period if both parties still don't agree to come together. Then the parties may appear for the second motion for the final hearing. So in your case better to ensure that she is present in the court in second motion time.