Kyle Richards seems to be on a mission to keep negativity away from her life, even if it means completely shutting out her co-stars in "The Real Housewives of Beverly Hills," specifically Brandi Glanville and her sister Kim Richards. 

In a report posted by TMZ Thursday, the Richards siblings have been at war since Kim's pit bull Kingsley viciously attacked Kyle's 18-year-old daughter Alexia last November, causing her to have multiple surgeries to reconstruct her hand. Kyle was furious at her older sister because she refused to let go of the dog. 

On the other hand, Kim is disappointed with her sister because she reportedly feels that Brandi is more concerned about her struggle with substance abuse than Kyle. 

This makes the 46-year-old Kyle more upset with her 50-year-old sister, since she claims that she and her husband Mauricio are doing everything that they can to help keep Kim sober, and she believes that Kim is just using them as an excuse to resort to substance addiction. 

These issues could be the reason why the Richards sisters may not reconcile anytime soon. 

Meanwhile, Kyle has decided to pay as little attention to Brandi as possible. In an interview with E! News, the Bravo star stated that she is not willing to patch things up with her co-star anymore. 

"I'm the kind of person where I get over everything. I not only forgive, I forget. At this point in my life, it's too much negativity, and it's very toxic for me. I know that to be friends with her, it's just setting myself up to be attacked again. I'm making a conscious decision to keep away because life's complicated enough," Kyle said. 

Elsewhere, "RHOBH" newcomers Lisa Rinna and Eileen Davidson are rumored to be quitting the show after season 5. The two have been embroiled in several catfights and controversies ever since they joined the controversial reality show. 

Early in the season, Brandi suddenly tossed a glass of wine in Eileen's face for no apparent reason, but she later on claimed that she was just feeling the heat of the moment during that time. On the other hand, Lisa had a nasty fight with Kim during a poker party that Eileen hosted, where the latter did not appreciate the former's concern about her substance use. 

Although RumorFix claimed that the return of the newcomers in the show would be very unlikely, both ladies and the Bravo management are still mum about it. 

Bravo's "The Real Housewives of Beverly Hills" airs every Tuesday at 9 p.m.