As Noah and Isaiah carefully mapped out the house, they realize there was one location in the east wing of they house they never thought to check- the garage! A place they, coincidentally, weren't allowed. They turned around to stare out their hideout window toward the garage and-- there she was! The mermaid! Swimming in the kelp forest between the east and west wings! It was late afternoon now and the sun filtered warm light through the swaying kelp.. She met their gaze then turned and made her way toward the garage once more.

https://www.deviantart.com/tamberella/art/The-Kelp-Forest-878788050