For example, the following quote:
The crossed out question is in the audio book, but the listener has no idea that Beka decided to cross it out.
Another example is when, on the last page of Beka's first diary entry, we see feline paw prints on the paper. Of course this doesn't translate well into the audio book, so the listener misses out a little when she writes "Pounce says I am to stop feeling sorry for myself and get to bed, or he will ruin another good page with his inky paws" (6). Sure the listener can figure out what just happened, but that awesome visual is missing.
Finally, there are the times when Beka is exhausted and it shows in her writing. In one entry, as I recall, she actually stops writing mid-word and there is a line leading away from her writing as her quill falls away from the page. That isn't the case in the example I've got here, though.
"I think I
Unless my memory fails me, all but the first of the crossed out words are not in the audio recording. (And I've listened to it enough times that I should know!) But even in the audio recording, try conveying the fact that an apostrophe is missing in "Ill."
Despite my criticism I do love the audio books of Beka Cooper. Even though they fail to convey little details the narrator does a wonderful job, and I'll listen to them many more times I'm sure. :)