Isolation: mental hospital

The well-known channel "Moscow Speaks" has published news that shocked everyone. The body of the most wanted maniac of the 21st century has been found in the center of Moscow! The chief doctor of a private children's psychiatric hospital, Radimov Y.V., died last night. No one expected that the maniac known as the Mannequin, who had taken dozens of children's lives, was hiding under the robe of a distinguished pediatrician. After gathering all the evidence, the police were able to discover the bodies of the hospital's young patients. However, they were not able to find one of the girls. There were no traces of her presence in the hospital, and the evidence suggests that the child might be in the Moscow region. Is there any hope that she is still alive, or is there no room for a happy ending in this story? You are private detectives. Today the mother of the child, who is still being sought by the police, approached you. This grief-stricken mother is begging you to find her daughter. After thoroughly reviewing all the case materials, you head to the hospital. You managed to bribe the security guard - he will help you explore the mental hospital, but you only have one hour. Hurry up! "Death takes no bribes." - Benjamin Franklin.