Please tell me what movie this is? (I need the name) read full description.(please)?

well um about this time last year i watched this movie that had lindsay lohan in it but it wasnt confessisons of a teenage drama queen it was something about her dad didnt trust her enough to let her go over her friends house so he checked in on her every 30 minutes or so on her phone that was a tight phone. and in the story of the movie lindsay lohan and i thinkk her 2 best friends went on adventures and stuff like to this mall where they trickeed her dad into beleiving it they were at her friends house behind a carboard wall that looked like a house. and one time in the movie she played a home movie to trick her dad again. and one time they were at a rock concert and the audience helped her trick her dad by moving robotically in the audience by he tought it was a movie. and i think at the end one of her friends moved or some thing like that. so yea these are some parts of this movie that i remember but i cant remember the name so please help me out i just want to see this movie again i love it. (P.S. Thanks) Oh and by the way what does P.S. mean anyways?