Depression Support Group
Depression is a real and debilitating condition that is often misunderstood by family and friends. Its meaning can range from a prolonged period of sadness to an actual mental illness with specific symptoms. Find and share experiences with others who are going through the same struggles.
If you are worried about a specific person getting in trouble you can phrase it such that it is hard to pin down exactly who was talking.
Now as an aside, my wife is a nurse as is her sister. My sister married a doctor and one of my wife's brothers is a doctor. They all deal with stress about cases they work on and need relief. But they have all learned that they need to keep the talk amongst fellow professionals, and to omit details that could identify who they are talking about.
Yes, by all means report the person!