The investigation shall include: A face-to-face interview with the vulnerable adult; and Information gathered from the adult and collateral contacts. The investigation shall be directed to: A determination of whether the individual is a vulnerable adult; and Whether there has been abuse, neglect, self-neglect, or exploitation. If there is a finding of abuse, neglect, or exploitation of a vulnerable adult, the investigation shall include information regarding: The nature, cause, and extent of the abuse, neglect, and exploitation; and The identity of the individual or individuals responsible for the abuse, neglect, and exploitation. The information collected shall include: Facts about whether the adult is unable to provide for his daily needs sufficiently to protect his health, welfare, or safety; Psycho-social factors affecting functioning of the adult; Medical factors affecting functioning of the adult; and Environmental factors affecting the adult, including housing, availability of transportation, and income. The local department shall secure the cooperation of the vulnerable adult to the extent possible. The local department shall inform the referring party when the investigation begins and the name of the assigned caseworker. Except in accordance with a court order, local departments may not share information on a case unless it furthers the investigation or service provision or is required in reports to law enforcement officials.