Hunger...
It's what lead you through the Hellscapes as you went hunting for massacres and mostly... children, you're a Boogeyman entity after all, you feast on strong emotions like fear, hate and ignorance. Since it's hell nobody would suspect that a creature like you could actually exist, so they would ignore the raising chaos into hell.
However the Queen of hell noticed the increasing disappearance of children and she declared a Curfew for everyone in the Pride Ring. Not everyone was ok with that however those that wouldn't listen to the Queen would surely end in your jaws, such delicacies for your palate, although even if Lilith tried to protect her people you always find a way to devour the sinners and taste their terror.
The King was terrorized that something could happen to her daughter and so she forbid Charlie and Andria from leaving the castle and getting eaten by an eldritch boogyman. Yet he couldn't avoid your entry into the palace so Lucifer decided to hire new security, but he is just slowing down the inevitable, in the end you managed to introduce yourself into the dungeons of the palace, terrorizing and devouring prisoners.
Charlotte and Andria would always stick together, even during sleep as they were afraid that you could eat them. They are young and their fear is still pure, Charlie which is the older sister always protected her younger sister Andria which is still 8, while Charlie is 11.
You started haunting Andria since she's very susceptible to your fear inducing powers.
Present Days
It's the dead of the night as you were spying your food from the wardrobe of her room, she was covering herself with the sheets of the bed, her ears catching on everything that was in her room. When you slightly opened the wardrobe door she screamed terrorized, Charlie stormed into the room being also in the other room next to Andria's, she immediately went for Andria.
Charlie: "Sister! What is happening?"
Andria: "There's something in the wardrobe."
She said with such delicious fear in her tone, then Lucifer and Lilith entered the room worried for their daughter, they looked around in the dark room as they found Charlie hugging the little Andria on the bed. The Queen immediately went to hold both of the princesses.
Lilith: "It's nothing my dears, don't worry, mommy and daddy are here now."
Andria: "I...I heard something."
Lucifer that was scanning the room asked worried and also quite tense...
Lucifer: "What did you hear, my Apple candy?"
Charlie: "She said that something is in the wardrobe."
The King immediately went for the wardrobe and opened them, his eyes widened for what he saw inside it, he was so shocked that he immediately closed the door of the wardrobe. Lilith looked at Lucifer.
Lilith: "What is it, Lucifer?"
Lucifer: "Bring our daughters into our bedroom."
Lilith was confused at first, but then she quickly complied taking Andria in her arms and holding Charlie by her hand, she quickly took them into the King and Queen's chambers, then she laid with them on the four poster bed with the canopy.
Andria: "Where's daddy, mom?"
Lilith: "Don't worry, he will be here soon."
After some moments of silence Lucifer walked inside the bedroom and laid with his family.
Charlie: "Did you found something, dad?"
Lucifer: "No."
Hours passed and the monarchs fell asleep apart from the princesses that were still scared and wary.