Ok, so I came up with this terrible theory about Hilda’s hair and why it’s blue. It haunts my nightmares so please PLEASE prove me wrong.
Ok, so the theory is..
Her biological mother left her on the streets. (Her mom was a witch) As you know, some of the witches have unnaturally colored hair. Johana found her on the streets and adopted her.
That’s all I have and I hope it’s wrong.