You, Marshmallow, and Apple were all listening to Bow's story, or "tale of the tail" as she called it. As Bow was explaining, everything clicked together. It all made sense.

"AND THAT'S HOW I GOT MY TAIL!" Bow said, after finishing her story of how she became a ghost.

"...This... changes EVERYTHING!" Marshmallow said, finally understanding, looking at Bow..

"That's what happens when you pay attention!"

Then, Paintbrush walks in holding the bodies of Fan and Lightbulb, looking at the lifeless bod of Test Tube on the ground... MePhoneX killed them. They looked at Bow.

"Bow... Please... How did you do it?"