Is seeing the former wife in the desert and offering dinars to her father in a dream an indication of the possibility of returning a divorced woman who has not been consummated, and what is the ruling on communicating with her with the aim of bringing her back?

Interpreting dreams is not our specialty, and you should consider this woman as a non-mahram (a woman with whom marriage is permissible). If you love her and are capable of marrying her and providing for her, it is best to propose to her through her guardian. Send some of your mahrams to negotiate with her. If she agrees, proceed with the marriage contract. If she refuses, dismiss her from your mind, as there are many other women. Seek Allah's help and supplicate frequently to find someone who will bring you happiness in married life.