In her first solo interview since the presidential election, Ann Romney told CBS News that she and her husband favor Rep. Paul Ryan (R-Wis.) in the 2016 race.

"Mitt and I are always very, very partial to Paul Ryan," she said, but "we don't even know if he's going to run." Ryan was Romney's running mate in 2012. 

Romney also argued that she and her husband could not and should not have done anything differently in that campaign.

"I really think Mitt and I did everything we could," she said.

Pressed by Charlie Rose on criticisms of the campaign, she said It would have been nice to have a "crystal ball" and know what to do and what not to do. "Everyone makes mistakes," she said. But without the benefit of hindsight, she said, "I don't think there's anything I could have done differently."

She also dismissed complaints that surrogates like New Jersey Gov. Chris Christie didn't do enough to help the Republican ticket. "I have no bitterness towards anyone," she said. "We are fine."

Now, she said, "life is wonderful, I'm full of joy." She has been doing a lot of horse riding and shows, she said, and Mitt has been very supportive. "He's been the most extraordinary husband this winter for me," she said. He's also been writing a lot, she said, and they have been traveling together.