The Real Housewives of Beverly Hills star, 42, speculated about Richards' future on the show, saying she didn't know whether the beleaguered Bravo star would return for the next sixth season.
"She's in rehab right now," Glanville said. "I don't know that she's not doing the show."
Richards, 50, was arrested for public intoxication last month, and subsequently appeared on the Dr. Phil Show for her very own intervention. During her sit-down with the psychiatric expert, Richards stormed out and refused to acknowledge her issues before the cameras.
"I wasn't shocked," Glanville said on Thursday after Richards confessed to drug use during her Dr. Phil special. "But you know, at the same time, I've never seen her drink or do a drug... I was just her friend, and I witnessed odd behavior but I never saw her do anything."
At the end of the day, Glanville said it was up to Kim to want to seek treatment. "You don't want help until you say it yourself," the mother of two noted to McCarthy.
As for how Richards has been faring in rehab? "I would die," Glanville said of how she would personally react to rehab. "But if you saw where her rehab was. I was like, 'Anyone could use 30 days here. It's really nice!' ...I don't want to out where she is. It's beautiful. I took the kids, and was like, 'This is the Four Seasons or something.'" (Glanville told Us Weekly exclusively several weeks ago that she had seen Richards after her arrest.)
While Glanville's friendship with Richards blossomed on RHOBH this past season, the star surprisingly said her only true ally on the series is Yolanda Foster. "They're just fun," Glanville said of David Foster and his statuesque wife. "They don't take anything seriously."
While David had a tough time understanding why his wife -- who has been very neutral amongst the Housewives -- would want to do the show, Glanville noted that she "gets why" the mother of three does it. "We weren't talking about Lyme Disease," she said of the discourse surrounding the debilitating illness.
The one person Glanville seemed to still have a big problem with from the mix of Beverly Hills Housewives was Kim's younger sister Kyle Richards. While playing a game of Real Housewives word association with McCarthy, Glanville referred to Kyle as a "c--t" and Lisa Rinna as "crazy." However, with Rinna, she added the word "crazy love" after her first statement.