She did an interview a few years back. She seemed VERY involved in his care. What do you do with yourself, after years of constant caretaking, when that person leaves? It isn't like raising a child, who gradually pulls away, and then leaves home. One day he was there, needing her, and the next, just gone.
God Bless her. I can't imagine where the strength comes from.
She was a nurse's aide before she got into acting, IIRC.