It's something I would love to know more about too.
The problem with Janette asking it is, she won't listen to the answer. Janette has a formula - 'ask question, get answer, cut off interviewee.' She did it to Luba last week, rather than letting her finish a sentence. Then moved on to some time filler and I thought why did she not allow Luba to finish speaking and then the time filler could be condensed, since that's all it was.
Likewise with Krishnan, he said to her that Lauren treats him like a dancer, when he was talking about how much Strictly means to him. She repeated what he said, laughed (it wasn't funny) and then ploughed on.
Anyway, I digress, I agree Katya is superb and she is smoking hot, into the bargain