from www.radaronline.com – An ex-girlfriend beaten by Charlie Sheen has approached the Colorado prosecutor in charge of the actor’s domestic violence case and offered her help, RadarOnline.com has learned exclusively.

Sheen is facing one felony and two misdemeanor charges from his Christmas arrest after wife Brooke Mueller called 911 and told police Charlie held a knife to her throat and threatened to kill her.

Now former girlfriend Brittany Ashland, who was attacked by Sheen in 1996, has made contact with Pitkin County Deputy District Attorney Arnold Mordkin through her attorney and offered to help with the prosecution, RadarOnline.com has learned exclusively.

In 1996 Ashland claimed that Sheen grabbed her by the hair and slammed her, face first, into a marble floor, knocking her unconscious. He pleaded no contest to misdemeanor battery with serious injury charges and Ashland also filed a civil suit against him.

Sheen’s next court date for his Mueller case is March 15.

As RadarOnline.com previously reported, the district attorney wants to interview Sheen’s ex-girlfriends Ashland and Kelly Preston, as well as ex-wife Denise Richards and question them about violence they suffered from the actor. Sources tell RadarOnline.com that no interviews have taken place yet, but could “occur closer to trial”.

In 1990, Sheen accidentally shot then-fiancée Preston in the arm, subsequently ending their engagement. In 2006 his second wife, Richards, filed a restraining order against him claiming he had threatened to kill her.

While awaiting his trial date, Sheen recently checked into rehab saying it was just a “preventative measure.” But source told RadarOnline.com that Sheen had been using cocaine and was back drinking alcohol, despite two previous stays in rehab. Sheen’s wife, Mueller, recently fled two rehab facilities and is receiving rehab at home, according to her lawyer.

RadarOnline.com was first to report that she has been through rehab more than five times and has been smoking crack and drinking alcohol.