LOS ANGELES (AP) &#8212 Britney Spears defended her parenting and decried her critics, lamenting “how cruel our world can be,” in a brief interview on Ryan Seacrest’s radio show Wednesday.

Spears, always photographed but rarely interviewed these days, also spoke about her new album “Blackout” during the seven-minute talk, during which she giggled frequently as her assistant, Alli Sims, and friend, Sam Lufti, laughed and shouted in the background.

When the “American Idol” host, who has a morning radio show on KIIS-FM in Los Angeles, asked Spears whether she was doing all she could for her children, Spears replied, “Oh, God, yeah.”

“People say what they want and do what they do and it’s sad how people, how cruel our world can be,” she said. “At the end of the day.you’ve just got to know in your heart that you’re doing the best you can and that’s basically it.”

Spears’ ex-husband, Kevin Federline, has primary custody of her two sons, Sean Preston, 2, and Jayden James, 1. A judge on Tuesday granted Spears three monitored visits a week. She must also take parenting classes and have weekly drug and alcohol tests.

Seacrest apparently woke Spears up when he called her, and at times she didn’t seem to understand his questions.

As for rumors that she was dating Dallas Cowboys quarterback Tony Romo, Spears said: “Who?”

The interview ended abruptly when Sims took the phone, saying Spears had left to take a shower.