You've received some very good wisdom in the replies above. I agree that it is healthy for you to write to your Grandmother. I had the same kind of bond with my Grandmother and missed her terribly when she died.

She knows that you miss her and are thinking of her. She also is very, very proud of such a loving grandchild.

You are in no danger of bringing evil into your home. Your intention is with love and of the highest vibration.

It may help you to understand your sister's actions to know that she is acting out of fear. Many people are so frightened of death that they refuse to have anything to do with any part of it or even think about it. She was wrong to destroy your letters. In reality, she deserves your sympathy.

Keep on writing!