Can a woman go to the Real Estate Registry to make a power of attorney for her mother, without her husband's knowledge of the reason, in order to reclaim land disputed due to the disinheritance of females?

A woman is permitted to leave her home without her husband's permission in specific situations, such as going to a judge to seek one of her rights. This is supported by the hadith of Hind bint Utbah with the Prophet, peace and blessings be upon him. In the commentary on Sahih Muslim, it states: "This indicates the permissibility of a wife leaving for a fatwa or for judicial matters, even without her husband's permission." What the questioner seeks, which is to appoint a lawyer to litigate for her right, falls under this category, especially since she will leave with her husband's permission, but will only conceal from him the reason for her departure.