Kim Richards was under the influence of drugs or alcohol when she broke her sobriety at her daughter Brooke Brinson's wedding over the weekend, according to reports.

Richards was clearly under the influence of something which she took in private, because when she interacted with people after the wedding she was "a mess," TMZ reported. The 50-year-old, "The Real Housewives of Beverly Hills "star was saying horribly nasty things to her daughter, Brooke and was cursing out the groom's family," according to the New York Daily News.

Richards' meltdown at the wedding prompted Brooke to never speak to her again, and her sober coach could no longer control her and left Mexico immediately after the wedding, according to the Daily Mail.

TMZ further reported that Richards is still in Cabo San Lucas despite her deadline to return to the facility on Monday. She was merely given passes by the alcohol rehabilitation center for the wedding.