You see the girl and she is smiling outside, but inside her heart is breaking.
You see the girl playing her heart out, but in truth she is just watching the notes fly past her.
You notice the girl walking down the hall full of confidence, but she is scared to death. She is trying to pretend that she stands in when, she knows that she just stands out.
You do notice the bags under her eyes, but she just says that she was up late studying. But this is her third day of no sleep.
At lunch the girl just sits there not eating the food in front of her, she claims that she isn't feeling good. But the real reason is that she is terrified to gain weight.
Sometimes you notice that her eyes are red and there seems to be traces of tears on her face, but she just passes it off as allergies.