Dear Angel of Eventide,

 Your Grandmother may have intended to keep her promise to contact you, when she made the promise.  But your Grandmother did not promise that she knew all the laws governing the Beyond, or that she would work on changing any Spiritual Laws.

I take a more active role to contact the deceased.

Certainly asking for a Medium is one path.

My suggestion is more to envision having a conversation, and asking questions in a conversational style, which will be easy for you to be able to imagine an accurate answer.  Start out with simple questions.  I have gotten some startling responses.

The best way that Spirits work, is to be supportive to you.  "Grandma, will you help me bake this cake?"  "Grandma, will you ride in the car wtih me while I drive to the store?" 

 Spirits can give you support, and can accompany you. 

 Blessings

.