Is an additional affidavit-in-chief legally permissible

If new facts emerge after filing Chief, it is the duty of the parties to bring to the notice of Court through additional affidavit, with those documents that were discovered that were suppressed by another party in the suit.  The court may its discretion on the basis of facts stated in the affidavit.  Apart from technical objection through the counter, what is your counter against such an affidavit ?  

What is the reason for additional affidavit?

Thank you so much for the reply to both the Seniors.

The additional Affidavit-in-Chief was actually filed as a protracting tactic. The Petitioner wanted to delay her cross-examination (as related matter is going on in the High Court). 

While no reason was given by her before the Ld. Trial Court, such an explanation (or excuse) only appeared before the Sessions Court where she has blamed her Advocate for this "error". According to her, she had given all the instructions to her Counsel the previous day. However, her Advocate erroneously took a print-out of the previous version and also forgot to annex certain documents. When she allegedly brought his attention to this fact (in the Courtroom - something that never happened, btw), he assured her that he would file an additional Chief on the next date and so she remained silent.

Both - the Trial Court and Sessions Court have rejected her application to allow the additional Chief. The matter is now in the High Court where she keeps blaming her Advocate (no longer representing her before the Trial Court).

Please note that the same set of incidents happened in the Family Court, and that too, just a few days before this matter. She desperately wanted to delay her Cross. Same Advocate, same parties, same exact set of incidents.

Isn't that too much of a coincidence ? And more specifically, Abuse of Process of the Court ?

Look forward to your guidance.

 Thank You

Amita