How can one deal with the recurrence of emotional traumas and negative experiences that have led to deviation from the path of marriage, knowing that these experiences have caused a feeling of unwillingness to marry others?

The action taken by the questioner is very wrong. She exposed herself, her religion, and her honor to danger. The problem is that she thought her advanced age and delayed marriage justified her seeking marriage through unlawful means. The provision of marriage and offspring is solely in the hands of Allah, and it is predetermined and decreed. One should not violate Allah's commands to obtain provision, for "what is with Allah cannot be attained except through His obedience." The real deprivation is not from marriage, but from neglecting one's religion, honor, and chastity. To preserve oneself, one's religion, and one's honor, one must follow the path of purity and chastity, lower the gaze, avoid everything that leads to immorality, and fill one's time with the remembrance of Allah and acts of obedience. This will not delay a provision that Allah has decreed, but rather it is the correct path.