Chris Connor / WENN 1 / 5
Chris Connor / WENN 1 / 5

Brooke Mueller has not gone into hiding after her Christmas Day incident with husband Charlie Sheen. Mueller, who tearfully told a 911 dispatcher that Sheen was threatening her with a knife on Dec. 25, was out and about in Aspen, Colo. (where the alleged incident took place), on Monday, E! News reports.

The 32-year-old attended a cocktail party at her mother's home and hit celeb hangout Caribou Club and "stayed until closing time," a source tells E!

Reportedly wearing jeans, a green sweater and no makeup among a more decked-out crowd at Caribou, "Brooke was low-key," the source continues to E! "She was talking to friends and walking around the small club ... you could barely tell it was her."

Not that there weren't recognizable stars in attendance: Paris Hilton, Doug Reinhardt and Gerard Butler were all reportedly at Caribou that night, but Mueller stuck with her friends. Her twins with Sheen, Bob and Max (born this year), were spotted playing in the snow with their nanny earlier that day. The 44-year-old Sheen, meanwhile, has returned to L.A.

Sheen was booked for suspicion of second-degree assault, menacing and criminal mischief and was released on $8,500 bond Friday evening. He could face from two to eight years in prison and a $2,000 to $500,000 fine. Prosecutors likely won't decide whether to file charges against Sheen until Feb. 8, when the actor is scheduled to appear in court.


More on MSN:

Video: Sheen dispute goes public

Check out more celebrity mug shots

More on Wonderwall:

Which stars got in trouble with the law this year?

More on

See other stars have their day in court

Check out the biggest breakdowns of 2009

See Charlie's mug shot!