Then I would suggest it is a case of two different levels of power wanting the same thing at the same time.
At a local level, communities were lacking resources (due to plague etc). They could get more resources off people they considered expendable - women who were old or single. I think that was the case all over Europe, but was only supported by the authorities in areas where they felt they needed to impose more control. So in Spain, where they had already imposed an orthodoxy, when witch craze set in, rather than go out to burn witches, they imposed a ban on witch accusations.
In countries where the authorities felt their control was under threat, due to religious conflict, they supported and encouraged the accusation of witches, so they could be seen to be exerting power. So where Protestant religions were new, they held witch trials. Where Catholicism was under threat, they held witch trials.
I was also wondering how it fits in with all the people who were killed for being heretics. Was that mainly men or women? If people were going to accuse many women of being ignorant or too stupid to have a view, would it then undermine that claim if you killed them as a heretic? Do you have to acknowledge someone as having an intellect in order for them to be capable of heresy? In that case, it would be more sensible to accuse women of witchcraft instead, which doesn't imply any intellectual ability, and in fact can be seen as a challenge to people who are in authority due to being educated? But I don't know about that. I don't know how many men were murdered as heretics, or why.