I think that, while her parents may have been well-intentioned, any individual should be allowed to live up to his or her biological destiny, even if it leads to death, or to the capacity to breed or to have sexual urges while having the mental age of a 3-month-old. While the tube may be akin to feeding, I think that, if the parents were to "do the right thing" by not refusing tube feeding, they had to go all the way and allow the girl to grow up. The very idea of "desexualizing" their daughter is even more terrible than the idea of pregnancy. Maybe there would have been no sex, and since she is not in a position to understand either situation, an act that can be physically enjoyable would not have been worse abuse than what doctors did to her. I don't think her parents acted in her best interest.

They acted in their own interest, and they were uncomfortable with their daughter's adult body and sexuality. And they did not protect her from abuse as much as they have deprived her of a form of pleasure (she probably doesn't have many) and, if it came to that, of motherhood. As for her child being mentally handicapped, that's not sure, and a handicapped child is still human, and not necessarily worse off than her.