Factual error: Near the end of the movie, Rob Schneider lets himself out of the police car. This would be impossible since the rear doors of police cars don't have handles on the inside.
Factual error: In the movie, prom happens during the end of the film. The movie spans the length of a week, yet we see that Jessica's boyfriend in the movie (Matthew Lawrence) is still having football practice. The high school football season ends months before prom. If it was supposed to suggest they are having spring practice, then he's not even supposed to be practising since he's a senior.
Answer: She was lying to the servant. Most likely, the servant was terrified and might have run away from the situation. But according to the shop owner, the rich husband died on the wedding night, so the servant remained the Princess and lived in the lap of luxury.