"I wasn't very happy," the single mother of four told Harry Smith in an interview for TV's "Rock Center with Brian Williams."
"Honestly, I don't think I'm as tough as I should be [on my kids]. I think I need to be maybe tougher. It's hard -- every day is a negotiation," she said. "But cigarette smoking I'm not very fond of for anyone. I don't approve of anyone smoking cigarettes -- most of all my daughter."
Smith then noted Madonna smokes in her new "Girl Gone Wild" music video.
"I don't smoke," she said. "That's just an accessory, Harry. There's a difference. [Lourdes] smoked that cigarette before I did that video."