I have not followed the details, so, just a thought - there are professional money managers who hold money in trust for some mentally ill patients. The fee for such services is small and sometimes even picked up by the state for qualifying patients. The benefits of putting your money in trust this way include not having to deal with relatives or SO's when it comes to money. Instead, you deal with professionals - no enmeshment, no aggravated feelings, but efficient resolution of issues.

maybe with LD it is also worth looking into.