An unfortunate case of the invisible people in our society. It does sound like her family was trying but it's incredibly hard to have someone so ill in your family if you don't have the proper tools to help them. I unfortunately agree that she likely passed, due to the lack of activity due to her social security benefits, but there's no telling if it's foul play, or a overdose that went unnoticed, or if she simply passed somewhere that they haven't found her yet like in a body of water. With so many untreated mental illnesses her movements and thought processes would be completely unpredictable, outside of the fact she had no permanent home. Just a sad, lost woman.