Short horror story!!

Unseen..

A girl had a fracture in her both the legs and she was lying on her bed in her room at mid night when no one was at home.she was talking to her best friend on Skype normally,suddenly she said so who's  that standing beside you.....she said this and her Skype video paused!!when she look behind no one was there!then she heard her window creaking and they closed she can saw somsomebody's footprints on floor which walked towards the door and locked it!!!!