Continuity mistake: The bracelets/bands around Melanie's left wrist change positions and fall down her arm, yet move back around her wrist between shots, as she plays with Tracy's hair. (00:05:10)
Continuity mistake: As Tracy throws her socks into her trashcan, and then her teddies (both from the bed and from the wall,) in nearly every shot the teddies differ positions/return/disappear etc. (00:08:00)
Continuity mistake: When Tracy is throwing her socks and other things away, from the close-up shot her trashcan is full, but when her mom arrives it is empty. (00:08:00)
Continuity mistake: When Tracy is about to ring Evie, we see her look at the cell number Evie wrote down. You can see through the paper, and you can see that the cell number is written all on one line, but Evie wrote it in two seperate lines. (00:10:00 - 00:10:50)
Continuity mistake: When Tracy first tries to ring Evie's cell, we hear her press eight buttons. Second time she tries, she only hits six. (00:10:45)
Continuity mistake: As mentioned on the commentary, right before Mel drops Evie and Tracy off at Melrose, a woman in a yellow shirt and white pants walks behind the car. A minute later the same woman passes again. (00:17:15)
Continuity mistake: When Mel drops off Evie and Tracy at Melrose, as Mel is talking to Brooke on her cell phone Evie is seen behind her car. A car goes by Mel's and suddenly Evie is gone. (00:18:00)
Continuity mistake: When Evie and Tracy go to the park, they walk down a stretch of grass, after Evie makes a drug sale. She stops two guys to make another sale. As she stops them, there is a boy with a helmet and skateboard running behind them. The shot then cuts to a close-up and suddenly the boy is standing next to the two guys. Then the shot cuts again, and the boy is running behind them again. (00:20:35)
Continuity mistake: After Evie and Tracy get back from the park, there is a scene where Evie is lying on the bed while Tracy and Mel talk. When we see Evie she is lying with her head on a brown pillow, but whenever she is seen reflected in the mirror, she's on a blue pillow. (00:24:05)
Continuity mistake: As Melanie is painting her toenails at the table, between a wideshot and closeup, a bottle of drink from the table disappears. (00:28:35)
Continuity mistake: When Evie and Tracy are sitting on Evie's bed and Evie is on the phone to Javi, the blue cushion behind her flips over, from having the back facing upward to suddenly having the patterned side facing up. (00:43:25)
Continuity mistake: When Tracy and Evie are stuffing clothes into a drawer, we see a light purple jacket hanging over the foot of the bed, which disappears and reappears between nearly every shot in the whole scene. (00:51:30)
Continuity mistake: After Melanie trips on the floor, she kicks the cereal boxes so that they all fly across the floor. A box of "Cocoa Bursts" is still standing up on it's own but in the next shot there is another cereal box lying next to them. The other boxes she kicked across the floor have also moved to different places. (00:59:35)
Continuity mistake: When Mel is going to see Brooke, she firsts picks up Evie and Tracy from school. Tracy is sitting in the backseat with Evie, but when she gets out at Brooke's house, she gets out at the front of the car.
Continuity mistake: When Tracy sits down on the chair at the tattoo shop, look in the mirror. A guy with a hat and another women walks in. The shot the zooms out to show Tracy. If you look in the mirror quickly, the same women walks in again.
Continuity mistake: After Tracy and Evie ditch the movie, they go to a place where some guys are rapping. A guy walks up to buy weed from Evie. In the background, a guy with a orange shirt and a white vest is sitting up, behind them. The shot cuts to a guy dancing, and the same man with the orange shirt is seen dancing next to him. The shot cuts back to the drug deal, and he is back sitting up, behind Evie and Tracy , when he is meant to be dancing.
Continuity mistake: When Tracy first goes to meet Evie, she gets on the bus with no purse. She even leaves her house without one. When she sees Evie in the store, she has a purse on her shoulder.
Answer: I think what started it was her tongue piercing. She didn't want to eat cause it would hurt and her mom would notice.
I think it's a combination of the tongue piercing and Tracy's new rebellious attitude. She wants to be "difficult" by refusing to eat what her mom cooks. Evie, meanwhile, is trying to impress Tracy's family, because she wants to live there for as long as possible. So she eats whatever food Tracy's mom cooks.
Drugs will affect your appetite.