"She was not on an all-night bender," the spokesperson told People. "In light of recent reports, it's easy to make false assumptions, but she's getting better and she needs the space to do that."
Photographs showing the singer scantily dressed and looking confused outside her home Sunday morning were published.
"She heard all these noises, and she went outside to look and there were all these photographers," the representative said. "She'd been sound asleep, and then there were all these photographers -- of course she looked startled."
The singer last week canceled the remaining dates on her British tour because of health issues and heartache over the recent incarceration of her husband, Blake.
Britain's Daily Mail quoted Georgette Civil, Winehouse's mother-in-law, as saying: "Amy is still using drugs when Blake's in prison. She is using more cocaine and heroin now than ever. She can't stop crying and keeps saying all she wants is peace. She's not eating or sleeping properly and is in pieces."