You may not need a diagnosis for treatment, it depends. I have been severely mentally ill all my life, in and out of mental hospitals for years. Ive seen all kinds of specialists, have been on disability for mental illness since I was a teenager and there is still no definitive diagnosis. Sometimes you just can't roll someone's group of symptoms into a neat ball that fits neatly into any diagnosis, but she may still find one. .
The question about were to go to find help, sadly comes down to money. You say she doesn't have insurance, so this reduces the options available. I would be curious to know if she would be elidible for medicade, I know its based on income and her husbands income would greatly effect this, but still worth looking into. I myself have medicade because my income on disability is so low. Im also wondering if she would be qualify for state or federal disability and again with her husbands income this would effect the amount she would receive. If she can afford it, or if she could somehow manage to get on a state insurance, I would say the best place to start exploring is at a university teaching hospital, where she could get psychiatric testing, psychological testing, neurological testing and extensive blood work done. All these things can be done on an out patient basis but if she is resistant it may not go over too well. Hmm, someone could become her power of medical attorney and have a bit more envolvment into her treatment if she were at the average psychiatric hospital, or taking it a step farther, someone could become her legal guardian so you may have more control over treatments. You want to rule out organic illnesses, brain diseases,perhaps get an MRI or CAT scan if you haven't already and cheak with your federal building and local family independence agency to see if she might qualify for financial assistance for treatment, and(if you have one) also check if she qualifies for treatment at your local community mental health clinic where you don't have to have insurance. Its very difficult to get a doctor to agree to the testing you want done, they are obligated to reduce the expenditure of medical dollars, so if something isn't blatantly obviously needed (but may well still be) they will deny you, but keep that these people, eventually they will break.
Sorry if I rambled, Im obviously very bitter at the mental health system but am forced to work within and around it.
Try not to be discouraged by her hospitalization attempt, nothing is ever helped in only a couple days in a hospital. If you fear for her, you can always get her involitarily admitted to a psychiatric hospital just to keep her safe, if it comed to this. You can get a petition for a 72 hour hold at the court house.
Cheak out earthhouse.org, it's a private conventional and alternative psychiatric "hospital"
In NJ.
I wish the best of all things to you and your sister...