Kim Richards is already rumored to be "causing trouble" at the long term rehab facility she recently checked into in Malibu.

"Kim has not been participating in the group activities here," a source told RadarOnline. "She has not been especially nice to the other patients and has managed to seclude herself as much as possible."

The 50-year-old "Real Housewives of Beverly Hills" star entered the intense 90-day program on June 10, just hours before attorneys appeared in court on her behalf to answer a slew of misdemeanor charges that included public intoxication and resisting arrest stemming from an incident at the Beverly Hills hotel earlier this year.

The facility marks the third Richards has checked into over the last several weeks, including one she briefly entered following her public meltdown at her daughter's Mexican wedding late last month. From there, she spent a short while at a facility that specializes in mental disorders.

As for somewhat standoffish behavior, a source at the facility told Radar it's not terribly uncommon for new patients to act as such.

"This is quite normal for people who enter treatment though and it will most likely change when she starts to recover and trust the process a little more," the source said.

Earlier this month, "Real Housewives" executives announced they were cutting ties with Richards in the wake of all her erratic behavior, but rumors are she is now hoping to salvage the relationship.

"The RHOBH producers really have no interest in bringing her back to the show," a source told Reality Tea back then. "Kim needs to get help and it needs to happen outside of the show."

In all, Richards has been with the Bravo-aired show five seasons. Last season's cast also included her sister, Kyle, and Lisa Rinna and Lisa Vanderpump.