A specific suggestion. I think your basic argument, to a judge or anyone else, should be that in removing your daughter from a Waldorf school (whether or not you did this intentionally), you did her an enormous favor. Indeed, you acted as any loving, rational parent *should* act.
(Forgive me for suggesting a lot of reading, below. Eventually you may want to do a tremendous amount of reading on these subjects, but for now merely skimming some of the following may prove helpful to you.)
Waldorf schools are built on Anthroposophy, which is a pagan, occult religion. [See, e.g., "Is Anthroposophy a Religion?" and "Was He Christian?" https://sites.google.com/site/waldorfwatch/is-it-a-religion https://sites.google.com/site/waldorfwatch/was-he-christian
In effect, Anthroposophy is a cult, centered on Rudolf Steiner, who was a self-described clairvoyant and occultist. [See "Clairvoyance", "Occultism", "The Waldorf Teacher's Consciousness", and "What a Guy". https://sites.google.com/site/waldorfwatch/clairvoyance https://sites.google.com/site/waldorfwatch/occultism https://sites.google.com/site/waldorfwatch/waldorf-teachers-consciousness https://sites.google.com/site/waldorfwatch/what-a-guy
Waldorf schools exist to spread the religion of Anthroposophy, and they try to lure their students into this religion. Usually, they do this be stealth. [See "Here's the Answer" and "Spiritual Agenda". Also: "Secrets". https://sites.google.com/site/waldorfwatch/heres-the-answer https://sites.google.com/site/waldorfwatch/spiritual-agenda https://sites.google.com/site/waldorfwatch/secrets
The damage inflicted by Waldorf schools can last a lifetime. Saving your daughter from this is precisely what you, as a good parent, should have done.