Long forgotten story

I remembered this story... I read it once, I don't remember when or where...

Once upon a time, there was a man and a woman. They were married, and she couldn't get pregnant. They really wanted a child. So they begged the powers that be for a child and she got pregnant. Months past, and she gave birth to identical twin girls. They named them Jessica and Jennifer. That night, the woman had a dream. She dreamt of a beautiful fairy, dressed all in white, with flowing blonde hair and clear blue eyes. The fairy said to the woman, "I have granted your wish. You conceived and gave birth. Now grant me my wish: give one of the girls to me. When she comes of age, I will take her to be my apprentice." The woman thought about this and agreed. She still could keep her other daughter. When she agreed, the white fairy pricked her finger and a large fat drop of ruby red blood landed on the forehead of the twin on the right, the child called Jennifer.
Meanwhile, the father had a dream. He dreamt of a beautiful fairy as well, but this fairy commanded a different beauty. She was dark, and cold, and stunning. Her gown was of flowing black, as was her hair, and her eyes were the color of ravens. This fairy said in a haunting voice, "I have granted your wish. Your wife conceived and gave birth. Now grant me my wish: give one of the girls to me. When she comes of age, I will take her to be my apprentice." The man thought about this, and seeing as how he would still have a daughter, he agreed. At the moment of agreement, the dark fairy pricked her finger. A fat drop of dark red blood fell from it onto the forehead of the twin on the left, the child called Jessica.
The girls grew older, identical in every way except for their coloring. Jennifer had beautiful blonde hair and blue eyes, while Jessica's eyes and hair were the color of inky darkness. They differed slightly in their personalities, as well. Jennifer would sing and dance all day, while Jessica was quiet and refused to sing.
One day, when the girls were 14 years old, their father took ill. Jennifer stayed by his bedside, and sang him songs of happiness and health. She sang of sunshine and fields, of birds and streams, all in her melodious voice. As the father was regaining his strength, getting better, he requested his other daughter, Jessica, to sing for him. She stubbornly refused. He begged and pleaded, and finally, Jessica said, "I have but one song. Do you truly want me to sing it?" The father nodded, and Jessica sang her song. As she sang, his head drooped lower and lower, until he died.
When the girls were 17, their mother took sick. Jennifer sang her songs of beauty, and the mother slowly regained her strength. A few days later, she called Jessica to her bedside. "Daughter," she said, "your sister has sung me many songs. Why is it that you do not share in her delight and sing for me? Do you not love me?" "Mother," Jessica replied, "I do love you, and that is why I do not sing for you. I have but one song. Do you truly want me to sing it for you?" The mother nodded, and Jessica bowed her head, and sang. When she looked up again, her mother was dead.
After the proper period of mourning, the sisters agreed that they should go seek their fortunes in the world. They set off together, walking along a mountain path. After several days, the path reached a valley. Near sunset, the path forked, the right leading into the sunlight and seeming the happier choice. The left led into an inky darkness so deep the stars did not even penetrate it. Night.
"Here," said Jennifer to Jessica, "is where we take our separate paths."
"Yes, " said Jessica, "I must go to the left. It is tugging within me."
"And I am just as strongly called to the right," her twin replied. "It seems to me the road to my happiness."
"Yet, I feel as the left would draw me, it would be my own calling, happy or sad," Jessica said quietly.
The twins hugged each other and turned away, each onto her own path. The light-haired girl meandered up into the sunlight, stooping occasionally to pick a daisy and put it in her hair, or smell the wildflowers, or chat with a sparrow. The dark-haired girl strode down the path of her destiny, not stopping for anything except to disentangle herself from thorny plants or to shout at the hoarse cawing of the ravens.