The spell would be dangerous for the up coming period of the day or month or year.For example,she can tell that the girl's baby will not be very happy nor the mother who gives her birth i.e the girl will either face difficulties the whole life or the girl wont have something for eg. friends i.e maybe only enemies to trouble all the time.The example of the story Snow white can also be taken like the queen gave her an apple which contained poison to free her from the world/die.The example of Snow white was done through an apple.The story of sleeping beauty in which the princess was made to prick in the wheel.Although the angels/fairies made it to not happen and broke the spell and said that she would sleep for a hundred years until she does not find the true person to carry on her life.