I have a few answers. You are right she moves very well, great footwork. Her groundstrokes are basically just solid, some people say there's a lack of power, but she getting better. Her serve can be as fast 115 mph, but is pretty inconsistent. People who saw her play mixed doubles at the FO said her volleys were awful, but when she was a junior, people said she came to net a lot, so I'm not sure. She likes faster surfaces, and clay is her worst, because she finds in hard to be as agressive as she wants.
Her strengths are movement and shot-making, her weakness is making stupid UE. I'm in the process of getting a tape of her match at the US Open against Serena, because I can't find someone with the Fed Cup match against Sveta.
Tatiana Golovin, Timea Bacsinzky, Petra Kvitova, Kristina Mladenovic, Laura Robson