Ma'am, that's a very good question. We just have no idea; we have no data looking at its effectiveness two or three years, or ten or twenty years, or decades later in terms of service members still suffering from mental health issues.
My sense is that you would probably need to get them into a one-on-one discussion with a counsellor and work through the stigmatization and self-blame and the view that it's a character flaw, a weakness that you have. That's clearly not the case, but they're probably going to need more support than a simple one-hour discussion of their perceptions and their experiences.