You can write your grandmother a note and keep it under your pillow with a chunk of crystal (whatever one works for you) next to it. Another way to do this would be to do a brief meditation before bed, thinking of contacting your grandmother.
I'm sure other people will have other ideas :) Good luck to you !!
I used a chunk of peridot I had bought, originally for another spell. But it was under my pillow with the spell. That night my grandmother visited me, she was glowing green just like the peridot. She hugged me, which I actually felt and told me everything was OK. At the time her words fit the dream, but I think it was just so she could get the message across. It was amazing to have happen out of nowhere.
So maybe try using peridot crystal under your pillow, and that may help bridge the connection between you and your loved one. I hope you find a way to accomplish this because its a great experience.
Well I suggest that you should think about her while you drifting off, thinking of meeting up with her again.
I mean I've had several people pass, and found out that when I think about them hard enough before I fall asleep, I wander around in my dreams until I meet them again.
I hope this helps and that I made sense.
May your grandmother walk in the gardens of Haven