Charlie Sheen and Brooke Mueller have already stopped living together, and now Mueller moved further away.

Who magazine found out that Mueller has been overwhelmed with her husband's legal problems and her own issues with alcohol. The real investor took their twin sons, Max and Bob, and moved more than half an hour from Los Angeles.

"Brooke is close to having a nervous breakdown over all that is going on with Charlie, so she took the boys to live in a rental house away from Los Angeles," the source tells Who.

"She is still taking outpatient help with her addiction problems and would have totally relapsed if she had not gotten out of town."

Another source close to the situation have informed that Mueller is back in rehab.

Mueller is trying out at least two rental homes and will stay in either Laguna Beach or Santa Barbara for several weeks, depending on which house she would choose.

"Brooke intends to continue her health regimen from whatever rental house she is in," the source tells Who.

"She goes to AA meetings and always has someone with her to help her cope with the current stress. This will not change."

Although Mueller and Sheen occasionally text each other about concerns with the twins, their recent phone conversations have led to confrontation and shouting.

"Brooke often throws down the phone when she speaks to Charlie," the source continues.

"Brooke is totally stressed and needs to stay away from him and L.A. and start a new life."

Sheen's legal problems were caused by a fight with Mueller on Christmas Day in Aspen, which resulted to charges of second-degree assault, menacing and criminal mischief.