Maybe she is calling David "I won another title without you"
Good one! We all have to give Petra a credit, there are some players that can't even move without their coach. This is good preparation for Grand Slams, maybe. So, I wouldn't take this necessarily the wrong way.
Anyway, If Petra would think that David can't help her anymore in any way she would find another coach and maybe keep him with her like a friend so we all can be finally happy. ¨