Guide for young wytches, a

I meet a dream boy on holiday, accept his invite to his dream mountaintop castle; but when I get here, it?s a nightmare of invisible staff (apart from old, sour-faced Lisa) and gardens of either freezing white snow or sheer darkness. Oh, and magpies who appear out of nowhere.Now I?ve found a book for ?young wytches?; but will it help me survive the castle, or is it just another trap?