Continuity mistake: At the end of the movie, Rodrick is driving Greg to school in his van. There is a close-up showing three flyers beautifully arranged on the top of the dashboard as they are driving along, and a soft toy. After Rodrick pulls away, there is no sign of the flyers and soft toy.
Answer: Angie was not a character in the first Diary of A Wimpy Kid book and was made specifically for the first movie, as told in the audio commentary of DoAWK. Chances are fans disliked the character.