Even if true as stated, that doesn't put Miller in any jeopardy. Her agreement with Fitzgerald was limited to conversations with Scooter Libby about Valerie Plame. Among her stated reasons for insisting on the agreement was to ensure she wouldn't be asked about other sources.
If she mentioned another source at the grand jury today, she might have done what Walter Pincus did: acknowledge, but not identify, the source. Fitzgerald made that agreement with Pincus, and there's no reason not to make it with Miller.
I don't get those who are opining Miller is in trouble. I think she is Fitz's new hero. The real question is, as I stated here, did she clear Libby or bury him.
Kristof published his article on Wilson's trip to Africa (without naming him) in May. Miller and Kristof work for the same paper. Maybe Miller got information on Wilson from Kristof and asked Libby about him in June.
The classified State Department Memo is still a unresolved factor. As this New York Times article reported:
Investigators in the case have been trying to learn whether officials at the White House and elsewhere in the administration learned of the C.I.A. officer's identity from the memorandum. They are seeking to determine if any officials then passed the name along to journalists and if officials were truthful in testifying about whether they had read the memorandum, the people who have been briefed said, asking not to be named because the special prosecutor heading the investigation had requested that no one discuss the case.
Rove is set to testify on Friday. I know everyone is salivating for an Indictment. But with the grand jury decision at most two weeks away, I am going to try and focus on deductive reasoning and unanswered questions gleaned from publicly available news sources.