How much about an ongoing investigation can an employee share with colleagues?

Q: “An investigation was conducted involving a charge of sexual harassment, and it was decided the allegations were unsubstantiated. Several days later it was reported that the victim openly discussed the investigation and findings with employees. The victim also stated that the services of an attorney have been secured and the company will be hearing from the attorney. At this point, should human resources meet with the employee regarding what was reported? Is she being disruptive? Should our legal department wait to hear from an attorney?” – Anonymous, Virginia