Cheer Up, Little Mermaid Girl

It was meant to be another picture (with the same face, only looking over her shoulder for a different reason) but I messed up, and turned into an emo mermaid.

I was supposed to be babysitting:
"What are you drawing?"
"A mermaid."
"What is she doing?"
"Sitting on a rock."
"Where is her tail?"
"It's going away."
"Why?"
"She's transforming into a human."
"Why is she sad?"
"Stop asking questions, Lili. D: "