"I'm scared for my life," Mueller says on the phone, adding that Charlie was packing up and trying to "sneak out the back" of the house.
Police were dispatched to the house and Sheen was arrested on suspicion of second-degree assault, menacing and criminal mischief. The "Two and a Half Men" star flew home to Los Angeles that night, and likely won't face charges before appearing in court February 8.
Charlie's rep Stan Rosenfield tells "Extra" in a statement, "Do not be mislead by appearance. Appearance and reality can be as different as night and day. It would benefit everyone not to jump to any conclusions."
UPDATE: According to a police affidavit released today, Mueller told police that Charlie held her at knifepoint and threatened to kill her if she told anyone about the alleged incident.