Is it permissible for a wife to request divorce without cause, while refusing to return to her husband and falsely accusing him?

It is forbidden for a woman to seek divorce without a legitimate, recognized Sharia (definition) reason, and what was mentioned in the question does not justify it. Therefore, it is advisable to pause and attempt reconciliation, and to persuade the wife to retract her divorce request. It is permissible to divorce her when all means of reconciliation have been exhausted. The questioner should also repent and seek forgiveness if he committed any Sharia transgressions during the engagement period, such as frequent meetings, as this may be a reason for the betterment of his relationship with his wife.