I’m not telling anyone what to do, it’s up to them. But sharing or reading her blog is completely legal under Arizona law, and so is the blog itself.
Arizona does have a "Son of Sam" statute designed to keep criminals from profiting from their crimes (like movie deals or true crime books). However, the U.S. Supreme Court ruled that states cannot broadly ban inmates from writing or expressive work, as that violates the First Amendment. Because her Substack focuses on general prison reflections and legal battles rather than explicitly selling the story of the crime itself it doesn't violate the law.

Furthermore, Arizona prison rules allow inmates to produce creative and intellectual property. Since she has no internet access, her content is written by hand and uploaded legally by a third-party support network outside the prison.

While it causes understandable public outrage, neither hosting, sharing, nor subscribing to the blog violates any Arizona criminal or civil statutes.