The Infinite Lives of Maisie Day
Christopher Edge (2018)

It’s Maisie’s birthday and she can’t wait to open her presents. She’s hoping for the things she needs to build her own nuclear reactor. But she wakes to an empty house and outside the front door is nothing but a terrifying, all-consuming blackness.

A rather strange short tale about a girl who alternates between reality and somewhere else. It concerns her sister, but how any why is not revealed to the very end.