EXCLUSIVE: 'Real Housewives of Beverly Hills' Star Kyle Richards Talks Rocky Friendship With Yolanda Foster

'The Real Housewives of Beverly Hills' star also dishes on her sister Kim and whether she'll return to the series' next season.

Kyle Richards dished to ET about her current relationship with Real Housewives of Beverly Hills co-star Yolanda Foster after Foster's Lyme disease diagnosis came into question during the show's sixth season.

Foster was clearly hurt by her co-stars' skepticism concerning her 2012 diagnosis, after some of the women suspected she was making her illness appear worse than it was. Despite the controversy, Richards told ET's Katie Krause that her relationship with Foster seems to have survived unscathed.

WATCH: Kyle Richards Says 'RHOBH' Co-Stars Are Questioning 'Exactly How Sick' Yolanda Foster Is

"We're fine," Richards said. "We didn't have any major problems...we're OK."

In fact, Richards shared that she's on good terms with all of the housewives now, but revealed that during filming, it was Lisa Rinna who hurt her feelings the most. Tensions reached a new high when Rinna lashed out at Richards' sister, Kim, this past season, tossing water on the former child star after Kim threatened to reveal a secret about Rinna's husband, Harry Hamlin.

"I told [Rinna], 'You're making it difficult for me to maintain a friendship with you by doing that,' but she did feel bad and apologized, so we kind of moved on from that," Richards recalled. "And I'm one to move on and let go of things, so I'm fine."

WATCH: What Fueled Lisa Rinna's 'Real Housewives of Beverly Hills' Blow-Up?

As for whether Richards will return for another season, she told us no deals have been finalized.

"I don't know yet!" she said. "Nothing's confirmed yet."

Kyle and her daughter, Portia Umansky, attended KIIS FM's Wango Tango concert and ET caught up with the adorable mother-daughter duo at the event on Saturday.

"Do I get the cool mom card?" Richards asked.

"If you want it," Umansky replied.

PICS: Nicky Hilton Rothschild Has Luxurious Baby Shower at Hotel Bel-Air

When ET spoke to Richards, she was fresh off niece Nicky Hilton Rothschild's baby shower. The celebration at the Hotel Bel-Air in Los Angeles on Friday confirmed that the 32-year-old socialite and her husband are having a girl!

"It was beautiful. It was really exciting," Richards gushed. "Two of my nieces are having babies -- Nicky and Brooke, Kim's daughter and Kathy's daughter. It's just an exciting time. Our family is growing and to see all my nieces and my daughters there all together was just a beautiful day."