Did you read to me?

We went to bed pretty tired, but Allison wanted me to read to her, so I did.  (We are reading together Washington Square).  After about 10 minutes I noticed she was sound asleep so I put the book away and turned off the light, which woke her up.  She woke up saying, with some tone of alarm "did you read to me? did you read to me?".  "Yes love, I read to you."  "Oh, ok" (back to sleep).  (she never heard a word I read...).