Demi Moore's daughter 'witnessed collapse' Moore, 49, is thought to have suffered a seizure after inhaling nitrous oxide - commonly known as laughing gas - and "smoking something" while hosting a dinner party at her home in Los Angeles. Emergency services were called after guests found her barely conscious on the floor, convulsing, shaking and "burning up." Demi Moore's daughter Rumer Willis is now believed to have also been at the house while her mother suffered the episode. In 911 recordings of the incident, a man can be heard calling: "Hey Rue. What's the name at the gate so that we can buzz them in from here? Any mention of the type of drug or medication was redacted from emergency recordings before its release, but somebody was heard telling the operator: "She smoked something. It's not marijuana, but it's similar to incense. Miss Willis, who uses the nickname Rue on her Twitter page, has been spending more time with her mother since she separated from Ashton Kutcher last year, following claims of his infidelity. A friend of the 23 year-old told People magazine: "Rumour's spent more time with her mum in the last few months that she has in a while." Miss Willis was recently photographed outside the Sherman Oaks Hospital in Los Angeles, where her mother is still recovering from what her representatives say is "exhaustion."