All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
If your wife wants divorce with no harm caused by you to her, it is obligatory upon you to accept her request for divorce, and it is permissible for you to reject to divorce her until she renounces her right of the delayed dowry.
But if you divorce her without you conditioning on her to renounce the agreed upon delayed dowry, then it becomes incumbent upon you to pay it to her. For more benefit, please refer to Fatwa 89039.
Allaah Knows best.