No, that wasn’t what I meant. I wondered if there was any chance that her stomach contents, even though they were visually indeterminate, could still be identified by DNA testing—so, for example, they could determine whether her last meal was pulled pork, (presumably at the Merry Piglet,) or peanut-butter and apples, (presumably a snack after the previous meal had passed out of her system.) Examples invented at random.
I don’t remember having read anything about using DNA in that sort of way, but I’m sure that in theory it could be done, unless the passage of time was too long.
All this just my questions and speculations.