Well, I think it's worth talking about. Her very cozy relationship with Mr. Libby is troubling, to say the least; here was a woman who knew as much about Iraq's WMD capability as any citizen alive, yet she was apparently perfectly willing to set aside what she knew or suspected and put forth the White House party line as fact. Not only that, but she described him in terms he dictated without a murmur.
Then, when the truth started to come out and the **** hit the fan over Mrs. Wilson's covert status having been violated, possibly deliberately, Ms. Miller again proved herself to be rather too accommodating vis-a-vis Mr. Libby's best interests - going to jail rather than give him up as having improperly discussed classified information with her until he specifically gave her permission to do so.
I'd say her credentials as a journalist have been well and truly compromised, at this point. There is at least the appearance of impropriety in her relationship with Mr. Libby (and yes, the idea of anything "improper" going on between those two is an eye-ripper, but there it is).
____________________________
In a time of universal deceit, telling the truth is a revolutionary act.