First, my deepest condolences on your loss.
Dreams of the deceased are extremely common. They are not visitations from the other side, but expressions of your feelings about the deceased, often revealing where you are emotionally in the grieving process, especially if the passing is recent. The 5 stages of grief are... denial, anger, bargaining, depression and acceptance.
For more about this symbol, here's a link to the definition on this website:
dreamdoctor.com/dream-dictionary/definitions/deceased.html.
Feelings in dreams are never disguised, so how you felt IN the dream is how you feel about its subject in your waking life. Your dream is quite tender, loving and beautiful. It expresses your acceptance of her death, your sadness, and love for her.
It is not uncommon to have more than one dream about a deceased loved one. Each will help inform you about how you are processing those feelings.
Thanks for sharing your dream.