Jail time? I can see consequences written into the law for missing school, but jail time? Really? That's criminal treatment, and what she did was in no way criminal. Crazy.
It's 24 hours. You people are acting like he sent her to a maximum penitentary full of men only. Also, missing school longer unexcused than 10 days is criminal, ergo, by definition, she is a criminal. It's the same if a robber isn't doing it for greed, just trying to support his or her family, he or she is still a robber. Granted she may not be hurting or causing trouble for another, there's no excuse to slink around the law, you let one do it, and you find the cretins using that as an excuse to slink around the law. It's best to be firm about the law IMO.