Thank you for sharing this beautiful story. Don't know what Viet Namese folks do when a loved one dies, but I believe she's still hanging around, dishing out some strength and love to you, her favorite grand daughter!
It's wonderful that the rest of your family was able to put their beliefs aside and endured great difficulty to allow her to die at home. all my kids were born at home, and I pray to be able to die at home as well. Yes, it's difficult for those around us, but its' infinitley better than in the damn hospital. Think of all the work it takes for a mother to be in a holding pattern waiting for her baby to decide it's time to come out. It's her work to do alone, really.
After all the babies your grandmother helped into this world, I'm glad she was able to be at home when it was time to leave as well.
Keeping you in my prayers.