I've dealt with a rather similar situation with a housemate of mine. He is bipolar, and his depression cycles are bad, as in, he has attempted suicide several times before. He has a job, but can't afford insurance or anything. Being in 10K medical debt already isn't helpful either.

Recently, his depression worsened, to the point where he basically stopped eating and went down to 100lbs, which is incredibly thin for his body type. He needed help. Thankfully, there is a free weekend clinic for those without insurance. He managed to get help and get a prescription to a generic medication that doesn't cost an arm and a leg, one that worked in the past. It really helped, and I know he feels a million times better.

What I remember from my mental health clinical, even if someone admits they are suicidal, that is cause for worry, but not all out panic. Mostly a mental health practitioner will want to isolate what is causing the feelings of suicide, any potential plans (whether they are realistic or not), among other things. Do you know why she stopped taking her medications? The cost?