Apocalypse, a female protagonist who grows stronger, ensemble cast, survival, adorable pets, reborn, not a power fantasy where the heroine fights her way through everything
The blurb isn’t great, so you can check out the main text instead. If it’s not to your taste, feel free to look for something else.
Here’s the blurb:
Lin Shu’s transmigration is a carefully planned “restart.”
When she first sees mutated creatures invade and human civilization reduced to ashes, all Lin Shu wants is to go home.
With the determination to return home etched into her bones, she goes from a helpless student to fighting her way into the heart of the wasteland. When she finally stands in the desolate place where she first arrived after transmigrating, she says:
“I can’t go back, and I won’t go back anymore.”
That night, the final light before dawn shines over the wasteland.
Her blood paves the world’s path home.