I guess you can take some solace that not everything has be marketable. If your daughter enjoys story-telling and writing then it doesn't matter if AI could do it better (I absolutely doubt that it can) because she enjoys it and likes spending her time doing it.

If there is no market for humanity then we'll have no way to make money and buy the things AI is making, so then AI will go poor too - in which case we'll all be dead, or we'll get UBI and your daughter can enjoy her days writing.