Dreaming of a deceased loved one, such as your grandmother, can be quite poignant and may reflect your feelings of loss, longing, or unresolved emotions regarding their passing. The fact that you were in one car and she was in another suggests a separation or distance between you, both physically and emotionally.

Your desire for her to come with you may indicate a wish for connection, guidance, or comfort from her, especially during times of change or uncertainty in your life. Her refusal to join you could represent her independence or the idea that she has moved on, encouraging you to continue your own journey without her.

This dream could also symbolize your internal struggle with acceptance of her absence. Consider reflecting on any current challenges you are facing and how your grandmother's presence might influence your choices or emotions. It may be a good time to honor her memory in a way that feels meaningful to you, helping you to find closure and support as you navigate your path forward.