"I Don't Want The Retarded Baby"

I don't know if I buy a whole lot of Levi Johnston's story. But when he says this;

Sarah would call Trig—who was born with Down syndrome—“my little Down’s baby.” But I couldn’t believe it when she would come over to us and sometimes say, playing around, “No, I don’t want the retarded baby—I want the other one,” and pick up Tripp. That was just her—even her kids were used to it.

That doesn't sounds like compassionate conservatism to me. Does this sound like a woman you can trust to lead anything?