I can dispute that. Many Bipolar I and II people are doctors, lawyers, judges, nurses, psychologists, professors, teachers, scientists and much else. These are people I personally know or who I have interviewed. In one rather well-publicized case in my county, a bipolar judge eventually resigned the bench, as he got older, his situation worsened.
No one is barred from a career unless the illness interferes significantly with their job performance. But many symptoms are more pronounced outside the workplace. Workplaces and professional roles provide much-needed structure.
That's not what I understand "at risk" to mean (and I don't think that's what it means in Santa Barbara County, which I know well).
As to drug problems - I know several nurses who are working in SoCal after drug rehab. Heck, we've got nursing students starting their first jobs as RN's after coming out of drug diversion programs that mandated they go back to school. Some of them have been quite candid on SM about their experiences.
Naturally, they have to disclose it and one nurse I know is in a situation where they are on a ward where there are scheduled drugs (they don't have the code - only one nurse per shift has it).
Bipolar doesn't show up, usually, until the mid-20's and it can be the early 30's before a very serious episode takes place.
I hope that Ashley is simply unwell, but the fact that they haven't located her using her credit card use is very troubling. She could of course be sleeping in her car, there's a lot of that these days. It would seem she headed south.