AceShowbiz -

Rumer Willis might be by Demi Moore's side when her actress mother went into a semi-conscious state after smoking an unknown substance last Monday, January 23 night. The 911 call that was made from the "Margin Call" actress' home was released on Friday, and the callers can be heard asking a person named "Ru" about the location of the house.

At the 54 second mark of the 911 recording, one of the people on the line asked the person believed to be Rumer, "What is the address, Ru?" The nickname was heard again at the 9:35 mark when another person on the line said, "Hey, Ru. What's the name at the gate so that we can buzz them in from here?"

Rumer, who uses TheRue nickname on her Twitter account, reportedly has often stayed by her mother's side since the ex-wife of Bruce Willis split from husband of six years, Ashton Kutcher. A source told PEOPLE, "Rumer's spent more time with her mom in the last few months than she has in a while."

The 911 recording itself unraveled that Moore "smoked something" before she needed to be transported to a local hospital. A female caller told the operator, "It's not marijuana, but it's similar to it. It's similar to incense," before adding, "She seems to be having convulsions of some sort." Asked about Moore's current state, the caller said, "She's semi-conscious, barely."

A second woman then took over. She told the operator that Moore is "shaking, convulsing, burning up. I'm taking cold water and putting it on her back because she's burning up." At one point, the woman was heard saying, "Demi, can you hear me? Yes, she's squeezing my hand. She can't speak. She's convulsing so we're holding her down."

When asked if she knows exactly what Moore smoked or what drugs she might have consumed, the second woman said, "She's been having some issues with some other stuff lately. I don't know what she's been taking or not." By the end of the call, a male caller got on the phone and said Moore is "much calmer...she's breathing fine. She's leaning up and talking quietly."