The female protagonist was reborn in a post-apocalyptic novel. Her parents and grandmother had long passed away. Her grandmother passed away due to grief. Did the female protagonist have any special abilities or necklaces?

I recommend "Doomsday's Portable Space" to you. The female protagonist of this sci-fi space-doomsday crisis novel also has a space. She was also reborn into a world where the end of the world is coming and obtained a portable space, which can avoid the various dangers of the end of the world. Similar to the plot of the novel you provided, she also lost her loved ones and only had a sense of nostalgia, but she survived and had a strong cultivation ability. I hope you like my recommendation. Muah ~