The beehive-haired Winehouse shot to global fame with her 2006 album "Back to Black," which won five Grammys. But her erratic public behavior, turbulent private life and frequent health problems — which included seizures, emphysema and bulimia — often overshadowed her musical talent.
Tuesday's second inquest re-heard testimony from witnesses and experts including the bodyguard who found Winehouse dead, the police officer who investigated and a doctor who treated the singer as she tried to quit drugs and alcohol.
The doctor, Christina Romete, said Winehouse was "a highly intelligent individual, very determined and willful," who did not easily follow doctors' orders and resisted suggestions that she seek psychological help.
She said the singer had successfully given up drugs after a period of taking heroin, crack cocaine and marijuana, but had struggled to stop drinking, going through periods of abstinence followed by booze binges.
Winehouse started drinking a few days before her death after being dry for almost two weeks.
"She said she started drinking again because she felt bored," said Romete, who saw Winehouse the day before she died.
"I asked Amy if she was going to stop drinking that evening and she said she did not know," the doctor said.