According to Vanderpump, co-star Lisa Rinna might have been the No. 1 culprit for making the season so unpleasant for her.
"She might as well have hit me with a baseball bat on the head," Vanderpump said.
During the RHOBH reunion, Rinna accused Vanderpump of trying to manipulate the storyline to focus on Yolanda Foster's Lyme disease.
"We're at my birthday, and you came … I was thrilled to see you," Rinna told Foster, recalling her birthday episode at Il Cielo. "You came with no makeup. You left. [Vanderpump's husband] Ken had said you looked terrible, and [my husband] Harry said, 'You know what? That's not OK. This woman is sick, and we need to stand by her.'"
While her relationship with Rinna has appeared to be on the rocks during the reunion, Vanderpump's friendship with Kyle Richards seems to be stronger than ever.
"Kyle and I, we've been through so much," she shared. "We're kind of the last two men standing -- so to speak -- of the original cast, and it's been an incredible journey. We've had our ups and downs, but it was a good season for us."
Despite the ups and downs, Vanderpump appreciates the platform that RHOBH has given her to spread awareness about causes she's passionate about, like her Vanderpump Dog Foundation, which is dedicated to improving the lives of dogs globally.
"I just absolutely love [dogs]," said Vanderpump, who lives with eight dogs. "I think they are truly a man's best friend. What we see now and what they are capable of -- the post-traumatic stress syndrome dogs, the arson dogs, the cancer-detecting dogs -- they are really incredible animals, so I have a passion for them."