I was just having a casual dream buying something at a counter, my grandmother then came out of a door and we hugged eachother.
It's either she misses you or versa.. it could be her real spirit or just your subconscious.. only you could know.. This happens to me too.. I dreamed about my brother from time to time, and intuitively I could tell if he was really on my dream or just my subconscious projection
I felt goosebumps in my dream ..
That was lovely dream. Mon is right, maybe she misses you or you miss her.