Micro-climates affect hatching too much to just say one works and one doesn't.
If high humidity results in her not getting a hatch, then she'll learn.
If it works for her, she'll learn that.
It doesn't work here, indoors or out.
Instructions written by someone for their own equipment and micro-climate work for them.
She doesn't live with the author. His instructions may be dated, may have to do with living in a very dry environment for some reason (even wood heating and cooking stoves) some of this stuff was written a LONG time ago.
I'd suggest moderation, then tinker up and down.
But if the written word is God, there is nothing you can do about it.