If you remember, when she first incarnated, she would return to auditor non-form after each time that she had visited Jeremy. During this period she did not really partake in any vices at all, so the chocolate/dream issue didn't come up until after she was used to the standard bodily functions.

Eventually, she found the body agreeable and decided to keep occupying it. From a taste bud perspective, she eased her way through dry toast up to more tasty foods, so that was manageable.

If you recall, she said the experience of dreams nearly killed her. However, we don't know if that would have killed her if she had only just started occupying the body, because that wasn't a reason that any of the other auditors died.