She’s totally commented on it:

“How can you do two things at once?”
“I don’t do logic problems.” (It’s a book of a type of Japanese logic problem called Slitherlink.)
“What does doing them do for you?”

I have done this off and on since No. 3. It gives me something to concentrate on besides the unpleasantness of sitting in therapy confiding in a stranger. I get much more out of sessions when I use the book.