Is it permissible for a wife who inherited two-thirds of two apartments from her Christian father—knowing that she converted to Islam and believes that a Muslim does not inherit from a non-believer—to relinquish her share to a Muslim?

If the wife favors the opinion of the majority of scholars that a Muslim does not inherit from a disbeliever, then it is not permissible for her to take anything from her father's inheritance. However, if she follows the other opinion, which allows a Muslim to inherit from his disbelieving relative who is not actively hostile, then it is permissible for her to take her share and spend it on the needy.