Is it permissible for a married woman to move in and live with her husband immediately after the marriage contract (aqd al-qiran) and before the official wedding ceremony, despite her mother's objection to that?

Celebrating marriage and publicizing the marriage contract is a recommended and complementary act, not one of its conditions or obligations. Its purpose is to announce the marriage and spread awareness of it among people. Holding a wedding celebration is one of the most prominent manifestations of this announcement, and the mother's request for it is a natural desire. Therefore, it is advisable to hold a small celebration with reasonable costs to satisfy the mother and publicize the marriage. If this is not possible, there is no sin in going with the husband, but it is recommended to appease the mother and convince her first.