According to what Smith stated at the arraignment, McDonald avoided contact throughout Thursday. Then, at 3:00, while Smith is in an unrelated trial, she announces charges and expects the parents to be able to teleport to Pontiac to be arraigned by 4:00pm, without any prior notification. When they can't do that (likely because their attorney didn't know it), McDonald goes and claims they are running and that they are not talking to their attorney, neither of which are true.
They speak with their attorney and agree to meet at 7:30am at Novi District Court to turn themselves in and be arraigned, which was then relayed to the prosecutor. At that point, the parents options were to either turn themselves in immediately and spend the night in jail waiting to be arraigned from the jail, or to sleep one more night where they were and appear presentable in an arraignment. In any other case, no one would have batted an eye at them choosing the latter.
The Judge did agree with the prosecutor. I disagree with the ruling, and can't help but believe it was swayed - at least in part - due to the media perception spun by McDonald.