Thinking out loud.
"Double amputee" can be of many causes, so without more background info, I won't dig into speculating of it. However, antipsychotics and mood stabilizers, along with first generation antidepressants, do induce metabolic syndrome and type 2 diabetes.
One of diabetes complications is sensitivity loss to feet, causing gangrene, therefore amputation. So, such double amputation can be caused by diabetes.
We can't disregard elements like "bipolar disorder", "unspecified medical condition", "mental disability"...
I also remember the Latulipp's case in Ontario. He went missing for 30 years before remembering his identity:
https://www.cbc.ca/amp/1.3445455
Kitchener man lost and found nearly 30 years later | The Star
I know that the cases are not the same.
But in order to match our JD, who is a living lady, I'd disregard the age went missing and focus on current age.
I know that Latulip case is very rare, but with a living JD in a group home, with the sparse info she could remember, I think that she may have been missing years, even decades ago.
Even if she went missing more recently, we can not discount a long term missing person.
Latulip lived in a group home, under an assumed ID after he lost all memory from brain injury after a fall.
In my experience with living with congenital brain injury, I can say that the sparse information she gave are more likely than not accurate. But with so sparse info, matching her is a Herculean task!
So, discounting her info will more likely than not hamper finding her true identity.
My issue is that the possible names she gives are so widespread that it's finding a needle in a haystack!
I think that the case is solvable as long as we keep in mind:
- She can be a long term missing person, so "age went missing" is not very relevant with a living Doe
- The info she gave in the FB page are more likely than not accurate, or very similar. But what she remembers is not specific enough for finding a perfect, clear-cut match.
- She can have been missing healthy, then she got an accident causing brain injury erasing all memory but sparse elements. AFAIK, she probably had a preexisting brain disability (neurological or psychiatric or both, it's not the crucial point for the sake of ID)