The sign was behind Tom's head, so he thought she was making it up. It surprised him, because she hadn't been putting more than a couple of words together for a long time, and here she was, saying this lucid sentence.
He asked her if she had been abused. She shook her head, no.
Then she repeated it.
"Why are you saying that?" he asked her.
She pointed to the wall behind him, She had been reading!
Later they found out she was drunk. She had drunk down a bottle of Robitussin for a bad cough. Every time she coughed, she medicated herself. No memory.
Ed said, "Grandma roboed."
I'm glad I stole it.