Heather Dubrow of the Real Housewives of Orange County is demanding answers from cast mate Vicki Gunvalson about former boyfriend Brooks Ayers. She wants to know exactly when Gunvalson learned that Brooks Ayers was lying about having cancer.

On Wednesday, Brooks Ayers issued an apology–but not for lying about having cancer. He claims he falsified documents “proving” he had cancer so those on RHOC would stop doubting him.

Heather Dubrow is demanding answers from fellow #RHOC Vicki Gunvalson and Brooks Ayers https://t.co/6snTgeJFp9 pic.twitter.com/r08GCyxVnV

— People magazine (@people) November 12, 2015

Heather Dubrow discussed the situation with E! News in an interview that aired Thursday night.

“The root of it is, Brooks is proven to be a con man. Tamra [Judge] has said this for years. I didn’t believe it until this year; now I see it. But the question for Tamra and Shannon [Beador] and Meghan [King Edmonds] and myself is now Vicki’s involvement in it, and when did she know? Because that’s…You know, he doesn’t affect us. He is who he is. He’s gone from all of our lives, I’m happy to say,” Heather Dubrow says in the interview. “But Vicki is in our lives. And when did she know? I think I said in the reunion, ‘We all agree he doesn’t have cancer but when did you find out?’ I said to her. So, I mean, those are the questions.”

These are very valid questions indeed–the kind that friends deserve to have answered. Did Vicki Gunvalson ruin many friendships by going along with some of Brooks Ayers lives?

Will Heather Dubrow get the answers she needs from Vicki Gunvalson?

How long did @vgunvalson know about #BrooksAyers' fabrications? @HeatherDubrow wants to know! https://t.co/RXxRtKQ9Aq @ENews #DearHeather

— PodcastOne (@PodcastOne) November 13, 2015

If not, it will be abundantly clear that these friendships didn’t mean to her what they meant to her costars.