Dreaming of a girl you don't recognize who is kind to you can symbolize several things. It may represent a longing for companionship, affection, or emotional connection in your waking life. This dream could also reflect aspects of yourself that you are discovering or embracing, as the girl might embody qualities you admire or wish to develop.

Additionally, the kindness shown in the dream may suggest that you are seeking comfort or support during a challenging time, or it could indicate a positive change or new opportunity on the horizon. Consider how you felt during the dream and any current situations in your life that may relate to these themes. Embracing new relationships or experiences could be beneficial for you.