Hi,
I just wanted to say how sorry I am to hear of your Grandmother's illness. Whenever I've posted something you have always been so encouraging so I hope you can come to grips with your Grandma's illness.
I don't have any tips to share, but when my grandfather was dying the most rewarding thing I found was sitting by his bed and trying to comfort him. As much as it hurt to see him like that, being able to see those brief glimpses of pleasure in his eyes at my being there, eventually, made his passing easier. It also made me feel like I had helped him when he needed it most.
I hope that helps.
Tallglassofwater