When Ib doesn't know a word she's reading it appears as "???". When Garry is with her, you can see the words she normally doesn't know... with one exception.
"??? by the ???, I ??? my finger over her beautiful ??? ... With her ??? she..."
Garry: (closes the book) "... Don't read this kind of stuff until you get older."
- If you go back with Mary in your party:
Mary: "I wonder what this says? Read it for me, Garry..."
Garry: "... I'd rather not."
Mary: "Huuuh, why? I wanna know!"
Garry: "... It's too soon for you two."