OK. Heaven_Official, if you are feeling more badly about this please let me know.
What I can tell you is that while there is always a possibility us being the faulting factor, however, we do not know the future. You must have felt that. had you done a little better, worked a little harder, or spend a little more time studying you would have been there.
But again, we do not know the future; and, had you, your parents, and your siblings known that her time is imminent, all of you would have made sure that you're all there before its too late.
Finally, I don't know if you believe the Bible, but given your screen name, please allow me to share the following verse:
27 And as it is appointed unto men once to die, but after this the judgment:
- Hebrews 9:27
Your grandmother was destined to die that day and hour; you are more more at fault than anyone else in your family.