As for the servants, they had no wish to please the haughty Bertalda, they were even glad to disobey her when that might be.
Accordingly they no longer delayed to do the will of their gentle mistress, and the stone was soon placed securely over the opening of the fountain. Undine then bent over it and silently wrote on the top of the stone some strange letters.
That evening, when Huldbrand came home, Bertalda met him with tears in her eyes, and complained to him of his wife's strange conduct.
'Tell me why you have ordered that the fountain should be sealed,' said the knight, turning sullenly to his wife. 'It was a strange deed.'
'I will tell you the reason when we are alone,' said Undine. 'It was a grave one indeed.'
'It matters not if Bertalda should hear,' said the knight, and he did not hide the impatience that he felt.
'I will tell you in her presence if you so desire,' said Undine, 'but I beseech you, desire it not.'
As the knight looked into her pleading face and let her sweet voice steal into his heart, he grew ashamed of himself. How could he ever be unkind to so fair, so good a wife!
Thinking thus Huldbrand did not speak, but he drew Undine gently from the room, that she might speak to him alone as she wished to do.
'Ah, now I can tell you,' said Undine, and she smiled in her content. 'You know that Kühleborn, my uncle, has begun to haunt the castle. I send him away in my displeasure, yet again and again he returns. Now I have shut the door by which he comes, and here he will disturb our peace no more. It is true that the stone can easily be raised by strong men, in spite of the letters which I wrote upon it. If you wish to do as Bertalda demands, remove the stone, yet do I warn you that Kühleborn may well harm the maiden, for against her he bears more ill-will than he does against others.'
Once more, as Huldbrand listened to his wife, he was ashamed. So gentle was she, so kind to the haughty maiden who but mocked at her for all her love. Peerless indeed was the soul of his beautiful wife, and once again love for her sprang up within his heart.
'The stone shall not be removed, nor shall anything that you order be undone, my sweet Undine,' said the knight.
At these words, and yet more at the kindness of his voice, Undine rejoiced. Then, seizing Huldbrand's hand, she begged him to grant her one request.