Out of my window (short story)

Feeling she's being stalked at late night. She opens her window wide and checks if someone's there. But finding no one outside, she thinks it was her imagination . However,She takes precautions. Shutting her windows, covering it with curtains. But before she could go to sleep she receives a message.
"A prank?" She thinks. But couldn't believe so either . No one would do that. No one she knows could prank like that. Moreover, she keeps feeling like she being watched.

she gets restless sleep and overwhelmed by curiosity.

She wants to find the person who is to be blamed.
She needs to find her stalker.