Shut in's Adventure in the Apocalypse

Rachel Usof is a shut in high school girl who reads sci fi novels. After not hearing her parents for a week, she opens the door. She finds out there are zombies everywhere. After she accidentally kills a zombie, then a message popped up. "Congratulations! You have been chosen to have the "Golden Finger" system!". Equipped with a system, (that isn't what it seems to be.) and with her cat. She meets many new adventures... (Multiple edits made to the summary.)