The pattern emerged almost immediately, as the fog only appeared after Simone’s visits and the cups of tea she insisted on pouring for me.

I stopped drinking the tea, but I did not make a scene or an accusation; instead, I became a woman who was temporarily avoiding herbal blends or who was too busy to sip.

I would let the cup cool while we talked, and then I would pour it down the kitchen sink while asking her if she wanted a glass of sparkling water instead.

The fog cleared instantly, and my body returned to itself in a way that was its own testimony to the fact that I was being systematically poisoned.

I called my attorney, Claire Hudson, who was a precise and unsentimental woman I had trusted for nearly twenty years to handle my most sensitive business affairs.

“Claire, I have reason to believe that my daughter in law may be attempting to drug me in my own home,” I said, and there was a long pause of focused attention on the line.

She did not sound shocked or doubtful, but instead she asked me to tell her exactly why I had come to that conclusion and what evidence I had gathered.