The first person it was reported to should have called the local authorities as well as their own chain of command.
If
DCL has a policy or a work culture in place that prevents this from happening it is for one reason only and that is to keep it in house until they have had time to do damage control.
If someone came to me to say their daughter had been molested my very first call would have been to the local police not my supervisor or in house security.
Crimes and accusations are reported to the police. PERIOD. Unless you are the police and the local prosecutor you have no authority to decide if an accusation has merit.
DCL screwed this one up. There is never an excuse to delay reporting something like this.