The president has been engaged in the WOT. I don't think he has asked for her reaction to the Lochner era, Korematsu, or the Youngstown Steel case.
Take your pick: Either the President has been engaged in the process of picking justices (meaning judicial philosophy was likely discussed between them) or Harriet Miers has been picking them for him. In either case, you have little fret about Miers.
As for specific cases, I thought the concern was judicial philosophy rather than how she'll promise to vote on specific cases. She's to be a justice, not a legislator, you know. It is supposed to be liberals who demand guarantees from justices in advance about specific issues.