Ah, a post-modern fairy-tale. It's a story about a witch who creates a child out of garden dirt and a turnip in order to fill a gaping void in her life, and what happens then. No, it's not a feel-good story about the turnip girl actually filling that void, because she doesn't; even at the end, we only get a suggestion that the void is going to be filled, rather than that it is filled. And it's not so much the turnip girl herself who does it, but the humanitarian cause she draws the witch into.
It could, I suppose, be read as a fable about fulfilment through altruism/activism and the stagnation of the hermetic spirit. Cue the prayer of St. Francis.
There's barely any interactivity here. The first part, building up to the creation of the turnip girl, is made up entirely of "next paragraph" links. The second part, showing how the witch brings up the turnip girl over the next few years, offers three choices, the effects of which are (aside from the immediate story text) to customise the turnip girl's reasoning in the end. We always end up in the same place; it is only this little bit of justification that changes.
Perhaps the author means to show that, regardless of how you approach it, you have to find that this cause is just. But I don't think the story is about the cause, so much as it is about how the cause affects the witch.
I like the style of humour, and I like the tone. All of that goes a long way towards forgiving the lack of interactivity. If this were breakfast, it might be a butter croissant with herbal tea: very light and elegant in its simplicity, but too quickly done.