I can't remember all the details, but they had a bad falling out. She even unfriended him on social media. I don't think she can go back to him. She'll have to incorporate some changes w/ her new team. Movement is one, she needs to be more solid on serve and I'm not entirely convinced her fitness is on par. She has the tendency to bail out of points early and go for a risky shot. She can get away w/ it against lower ranked players, but when she faces anyone who really knows how to play, her rally tolerance gets tested, she panics and bails.