Maybe... I have come across her and walked past her loaRAB of times, yes she is loud and swears alot, but she wasn't that bad (maybe because she was at college with frienRAB)... however, i realised last night on the episode when they signed the banner it read May 2010... and I have seen her before and after that time, when I have seen her this college year, she seems so much more calm and relaxed around college, so I genuinely think the experience did change her and she learnt.
When the father said to the camera, she wants her to behave was for dramatic effect I reckon, then they casually from that moment became more understanding and calm, so maybe it was...
a) a real threat and the producers told the two to behave otherwise the show would finish.
b) All for the cameras, and the girls were being told to act badly to make the show more entertaining.