One map move, and what it it means

[Sombre]

But the Crone pretender has mapmove 1.

I think it's largely impossible to work out the individual reasoning behind the mapmove of each unit. Not to say that some units shouldn't thematically be mapmove 1, it's just that you can usually argue these things either way. Witches are outdoorsy types vs witches are old, frail and typically depicted as staying put in their witchy hideout somewhere on the fringes of society.