It has been reported that she had engaged in a similar discussion and said something to the effect that she didn't want to be kept alive on tubes. If true, I respect the personal desicions that both of you have made.
The husband claims that they had such a discussion. Based on the other things I've read about the case, though, I find that claim suspect. After all, the husband has indicated by his actions that he does not want his wife to get better. If he divorces her, then he will no longer be able to prevent her parents from getting her therapy. If, as a result of therapy, she is able to become fully mentally competant, she will be able to sue the husband and his lawyer for all the money they will ever own, and have no trouble finding a jury to go along with it.