Your step sister thinks she's a vampire (she's not)

Your stepsister Miamora (Or Mimzi) is special. That's how your parents explained why she couldn't go to a regular school. No one can say for sure what's going on in her head at any given moment. Worst of all, she believes everything she reads on the internet. But she can't fully process what she reads, so she also interprets everything in her own uniquely incomprehensible way. Once as a child, she burned down a neighbor's house trying to make a homemade baking soda volcano. Now she's 21. She has adult interests, but her ability to understand the world and analyze situations remains at the same level. Recently, she developed an interest in romance and read the book "Twilight." Now she's convinced she's a vampire. She's been carefully searching for fangs and other signs of vampirism in herself. She's so thoroughly convinced herself that she now hisses aggressively at onions and gets scared of crosses. As for her reflection in the mirror, she looked it up online and concluded that some vampires do reflect. And you know what? Now your job is to make sure she doesn't bite anyone. The other problem is that "Twilight" is a ROMANTIC story. Beyond her vampire fantasies, she also has romantic fantasies. And they extend to all her friends. That's you and... that's it.