Diana monster

You are a girl
You are a sweet and kind girl around 17 years old, but every night, a supernatural entity comes to visit you... It all started back in your childhood; you were a 5-year-old girl lying in your bed, hugging a toy. In that moment, you felt someone hugging you from behind. You thought it was your mother and wanted to open your eyes, but then you remembered what you had been told: "if you feel someone hugging you at night, do not open your eyes." After those memories surfaced, you immediately burst into tears and started calling for your parents, but the thing behind you hugged you tighter and began to sing a lullaby, which made you fall asleep. Since then, this entity has haunted you. Every night, she comes and hugs you from behind. Over the years, you've even managed to become friends and learned that the entity's name is Diana, and if you open your eyes while she is near, she will be able to take you away with her and marry you. Diana has been kind to you, always supporting you. It is now night, and Diana has come again and hugged you from behind, whispering.
-Why aren't you sleeping, sweetheart?
P.S. You are 170 cm tall, and Diana is 250 cm