@Kachina624 Oh, I have def heard her say it many of times. You are right, Rachel spends more time outside of QVC with Kerstin, but I have heard Kerstin refer to her as a best dozens of x's. I know they go out for dinner and drinks together, as well as Rachel & Mary with joining, too.
Kerstin was the 1st guest on Jen's election night "get away from the TV" or whatever that whole situation was. Maybe, Kerstin always meant to say QVC bestie, but she has def referred to her as a bestie and a doz x's might be a massive understatement, too.