This case appears to me to stand for the proposition that the exchange of value between people who are not in an arm's length relationship does not carry with it a presumption of consideration.
If these two people were not her parents, but rather arm's length benefactors who said, "we will pay for your education, provided that you abide by these rules and allow us to monitor your compliance," then the whole matter is properly one of contract. But such a relationship could only exist between parents and a child if they had all expressly agreed to it.
So the moral of this story is: parents, if you want to stalk your children, get it in writing.
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--James