I think the phrase "looking down on us" is just for us-- the living. To make us feel better. From your Grandma's perspective, the time from her death (when she closed her eyes) to the time she "comes to" in her new body (if she is a Christian), will be an instant. A twinkling of an eye. And she'll have no memories of how she dies, or of any pain she experienced. The Bible teaches Jesus "wipes every tear away" aka- he wipes our painful memories. The Bible says that the old will not be brought to mind or remembered. That's great, because I'm carrying around stuff from the third grade- ha ha
Thanks, that's what I thought.