I think Laura does have a lot of influence, but there's something going on that is tying up the Bush family. Not that I'm excusing it or anything. Another poster speculated whether someone "has something" on Lauren Bush. These are people who will stop at nothing to murder Terri, so nothing surprises me.
I'm a bit more cynical in my observation. I don't think we can excuse this so easily. They have made a decision that they have "done all I can do." They have not. Aside from some lip service to "err on the side of life" I haven't heard them speak up on this travesty as much as they should have. Sorry, but that's what I'm seeing.