Simplify the following text for a Grade 10 native English-speaking person.
Original: When the creatures continue to affirm that Father Christmas is their benefactor and has entered the land , a clear sign of her waning power , she turns them to stone over the protests of Edmund .
Simplified: When the creatures continue to say that Father Christmas is their benefactor and has entered Narnia , a sign that her power is weakening , she turns them to stone .