Why do you think Turtle wants to look so mean?

Turtle's hair was singed and Flora took her to have it cut..... immediately after seeing the dentist and having a tooth drilled. Her haircut is described as being adorable.... but Turtle was having it.... she wanted to look mad.

Turtle passed her tongue over the drilled tooth. She had not felt a thing, but the real pain was yet to come. Flora Baumbach was taking her to the beauty parlor to have her singed hair cut off.

Turtle slumped low in her chair. Flora Baumbach thought the short, sleek haircut was adorable, especially the way it swept forward over her little chin, but Turtle did not want to look adorable. She wanted to look mean.