It had been a week since Ian had been rescued by the police. All the kids had been admitted to the hospital to get their wounds treated. After that, they had been made to take counseling sessions from a therapist. The children had been traumatized from being locked in the warehouse. So, it was very necessary to get them out of the trauma.
The police had also tried to contact the kids' parents to inform them about their kids. Within a week, all the kids parents' had come to take their child away. However, they had to wait until the counseling ended. So, they had stayed a few days until the sessions completed.
I have changed Ian's and Ronnie's age to match with the story. When they met for the first time, Ian was eight and Ronnie was six or seven.
And also about Ian forgetting his family will be explained in the next chapter.