A new Netflix series aims to explore the trauma behind the heroine. Is there a risk to rewriting a beloved book? “Anne With an E” is being overseen, written and co-produced by Moira Walley-Beckett, a “Breaking Bad” writer from Canada who also created “Flesh and Bone,” a 2015 Starz series about the physically and mentally brutal field of ballet. Walley-Beckett won an Emmy for writing “Ozymandias,” the watch-through-your-fingers episode of “Breaking Bad” in which the heroic cop Hank Schrader is slaughtered in the New Mexican desert because of his brother-in-law, the meth lord Walter White. This may seem like a...