Hi yinyang, So sorry to hear of your loss, all you can do is to be there for your gran, talk with her,cry with her and laugh with her, talk about your grandad, never be afraid to mention his name in front of her, she will have so much time on her hands, the shock will come in after the funeral, thats when she will need people around her, the evenings will be so lonely, so give her a call now and then or pop round in the evenings for a chat, it won't be easy but the way you are caring about her what you have to do will come naturally, hope all goes well with your dad, say hello to him and keep him smiling, I know it is hard but a positive attitude and your sense of humour can help you through this,
Take care yinyang, will be thinking of you and your family, I will go to the little church near me and light a candle for you all, Ray