Grammar help!! i just want to know if my grammar is ok?

Last month I experienced a death of a family member, my 102 year old grandmother. She die due to a pulmonary infection, her body couldn’t handle it anymore. When you are of a certain age people assimilate age with death. That happened to me, I didn’t want my grandmother to die but at 102 years old I knew it was going to happen sooner or later. When buried, they said to be six feet under, taking a dirt nap or sleeping the big sleep. When I was at her funeral nobody mentioned the term die, I was really surprised of the use of euphemisms at a funeral. Is hard to tell that somebody dies, we use words to ease the pain for someone leaving us for good.