"I think this is a sign of strength by Elizabeth Warren. She's acting and talking like a general election candidate," she said.
Perino added Warren's decision to back Clinton in 2016 now seems like more of a strategic move than initially imagined.
"She decided to back Hillary Clinton in 2016 over Bernie Sanders because, I think... she knows she's got that left side locked up," the former press secretary for ex-President George W. Bush added.
In addition, Perino's other co-hosts offered their take on Warren's reported conference with Clinton.
"Hillary Clinton could have a big impact on 2020," Juan Williams said.
According to a report by NBC News, Warren and Clinton have been open to contacting each other since the former declared her 2020 candidacy.
A source close to the former secretary of state told the outlet the correspondence has been "substantial enough to merit attention."