A recent interview with Katya here
She's 6 months pregnant, when she played USO last year, she actually was pregnant without knowing.
As for Alona, the last question in the interview is about her, and the answer is quite puzzling. Dunno if the wonky translation partly accounts for it. "Feels good" - which is positive, "while not thinking about tennis" - dunno what to think about this.
Well, at least she feels good and looks healthy.