We can say this for Hillary Clinton: She's much more relaxed when things are going well in her presidential campaign.

With her appearance on Jimmy Kimmel on Thursday, the Democratic front-runner has now checked off most of the late-night shows. Many of those appearances happened over the summer, when her campaign was struggling with e-mail investigation revelations, watching crowds swell into the thousands for her main opponent, Sen. Bernie Sanders (I-Vt.), and declaring their decision to inject more spontaneity into her campaign.

At times during all this, Clinton came across on late night as someone trying too hard, as she made what seemed like forced and not-necessarily well-fitting attempts to be more light-hearted -- like asking Jimmy Fallon to pull her hair to see whether it's real, a la The Donald.

Clinton's campaign problems are still real. But her string of successes over the past few weeks -- at the first Democratic debate, at an 11-hour hearing in Congress on Benghazi, and in the polls -- have given her some breathing room.

And if her appearance on Kimmel is any indication, she's taken a few deep breaths since then. Clinton had no trouble smiling authentically while talking about how a White House operator hung up on her, an experience disclosed via her released State Department e-mails.

She had, dare we say it, actual comedic timing when she joked about how she could beat her husband, former President Bill Clinton, in an election.

"You've got to have that kind of confidence if you're going to be in this arena," she said.

One of Kimmel's go-to gags is putting himself and kids in awkward situations.

Clinton handled a potentially awkward situation of her own gracefully when Kimmel invited her to meet a focus group of young ones, some of whom adamantly declared a woman couldn't be president. "Yeah, I had two brothers," she brushed it off with. "So I kinda get all of this."

When talk turned to the day's political news, Clinton was just as on point. She refrained from criticizing any of her opponents except to say she strongly disagreed with Donald Trump's positions on immigration and derogatory comments about women.

She declined to wade into the debate over how far right the Republican Party has turned since Trump got into the race, saying that she was instead "appalled" (and also "amused") while watching the past three GOP debates.

Clinton stayed on message throughout the entire show by steering everything back to how she's laser-focused on fixing the problems she feels most Americans are struggling with, from college affordability to jobs.

When Kimmel tossed her a softball about the GOP's stance on climate change, she swung hard. "It's hurting our country," she said. "And what I don't understand is there are huge economic opportunities here."

The audience cheered. If you can, catch her head nod at the end of this clip below. It's the closest thing we'll probably see Clinton get to a mic drop.