How can one return to Allah and restore the state of faith and psychological comfort that was lost after the death of the mother and the disappearance of spiritual blessings?

Among the means to repentance and rectitude are: recognizing their importance and that they are the only path to happiness in this world and the Hereafter; seeking Allah's help and refuge; acting according to His Book and following the guidance of His Messenger, peace be upon him; and associating with good people while shunning bad companions.

The sweetness of faith is the delight in acts of obedience and enduring hardships for the pleasure of Allah and His Messenger, preferring this over the fleeting pleasures of this world. The sweetness of faith is achieved by loving Allah and His Messenger more than anything else, loving people for the sake of Allah, hating a return to disbelief, and being content with Allah as Lord, Islam as a religion, and Muhammad as a Prophet and Messenger.

The questioner is advised to re-evaluate her relationship with her Lord, adhere to prayer and maintain humility therein, and perform abundant supererogatory acts of worship.

As for good dreams and healing by hand, these are a karamah (divine favor) from Allah bestowed upon the righteous. Losing them does no harm if the servant remains steadfast in their religion, for the greatest karamah is rectitude and adherence to the Sunnah. The one graced with karamah is someone who is steadfast upon the law of Allah and follows His Sunnah.