I think kids abandon stories all the time. They start stories and get frustrated or get a different, better idea. I think that it is more worthwhile to stick with a story and revise it and try to finish it than abandon ship. Revisions, for any writer, are the name of the game.
Gail Carson LevineWhy do you keep reading a book? Usually to find out what happens. Why do you give up and stop reading it? There may be lots of reasons. But often the answer is you don't care what happens. So what makes the difference between caring and not caring? The author's cruelty. And the reader's sympathy...it takes a mean author to write a good story.
Gail Carson LevineNo one is here," Char said. "You need resist temptation no longer." "Only if you slide too." "I'll go first so I can catch you at the bottom." He flew down so incautiously that I suspected him of years of practice in his own castle. It was my turn. The ride was a dream, longer and steeper than the rail at home. The hall rose to meet me, and Char was there. He caught me and spun me around.
Gail Carson Levine