[3][4] In 2022, three of Arnold's books (Damsel, Red Hood, and What Girls Are Made Of ) were listed among 52 novels banned by the Alpine School District following the implementation of Utah H.B.
"[5] Arnold obtained a Bachelor of Arts degree in Comparative Literature from University of California, Irvine.
[7][6] Arnold now teaches with Hamline University's Master of Fine Arts program focusing on Writing for Children and Young Adults.
[16] In 2021, Publishers Weekly named Red Hood one of the top ten young adult novels of the year.
[27] In 2024 the book Infandus was banned in Texas by the Katy Independent School District on the basis that the novel is "adopting, supporting, or promoting gender fluidity"[28] despite also pronouncing a bullying policy that protects infringements on the rights of the student.