Sen. Elizabeth Warren (D-Mass.) has been everywhere these past few days. CNN! CBS! Conan! The Daily Show! She was out promoting the paperback edition of her book "A Fighting Chance," but her timing also coincided with the final days before Hillary Clinton officially announces she's running for president (Sunday).

These interviews were her last to be able to dodge questions about Clinton ("I think we have to see, first of all, if she declares," she said on CBS "This Morning," as if Clinton not running was actually something that could happen at this point) and a preview of the kind of role she could play in 2016 as a non-candidate.

On CNN's "New Day," Warren was asked what her "dream presidential candidate" would be like, and like any good politician, she didn't directly answer the question, but said, "I believe what our election should be about ... is how we're going to pull back and make Washington work for families again."

She was given another chance to say something nice about Clinton when asked if there was any candidate who fit her hope for what the election would be about, and she didn't.

"I really want to give everybody who gets in this race a chance to get out there and put there agenda in front of us," she said, which theoretically means she would back the right Republican. But when it comes to the two who have already declared, Ted Cruz and Rand Paul, she's no fan.

"Of those who have declared I've already seen two of them in my view take themselves out of the running for really working for middle-class families" by voting against social security benefit increases and reducing student loan interest rates, she said.

That Warren declined to praise — or even really talk about — Clinton in interview after interview just might be that she only publicly talks about officially declared candidates, or it could show what's to come.

Warren wants less money in Washington, a higher minimum wage and lower interest rates on student loans; even without being a candidate, these are issues that she could raise and that progressive Democrats could push for with Clinton. We'll see whether Clinton can earn her approval in the weeks and months ahead.