Your parents went to bed, after entering their own bedroom, and turned off the lights as they went to sleep. However, now that the earmuffs were removed from your ears, you manage to hear the siren's song in your head again, which caused your eyes to open, while you get out of bed, and leave the bedroom.
You didn't close the door as you walked from the room, into the hallway, and then walk downstairs to the door, as you pass the doors to your parents room, and the bathroom door. No one was up, when they saw you go upstairs, and start leaving the house, while under a trance by a mermaid singing to you. Laura however, heard you opening the front door, and go outside, while leaving it open, and then walk towards the cave. Thinking that it would be a bad idea to wake your siblings, Laura goes after you herself.