Hmmmm.. well, I don't know how "appropriate" they are, and I suspect that my family's standards there may not be the same as others' are. Also understand that my DD is by far better able to process difficult/emotionally challenging stuff than most age-mates, even HG+ agemates (she's not "sensitive" to news stories, etc and has never been)...
but I will say that she's gobbled up the Horrible books since she was about this age. She still loves them, and she's nearing 14yo. Some of them she likes better than others, for example she much prefers the Ireland HH to the ones about the Victorian era or the Puritans, but that could be topical rather than the writing quality.
