Jelena has simply lost her focus and determination on court. It could be a culmination of off-court events or maybe she is not enjoying tennis that much at the moment but does not want to take an extended break (in case she loses rythmn).
She was just going for winners off every ball, and her timing was off. As she hits so flat, it was always going to be difficult for her. And her body language was very negative.
Jelena didn't play well at all, Meghann served very well and was otherwise consistent.
Jelena needs to find the fire again to want to compete on the court and actually concentrate when she strikes the ball. There were flashes of brilliance and we could see why she was No. 4.
Both her and Daniela's stories are quite sad, as they were definitely up there with the Belgians IMO.