The serve toss is one of the most complex technical elements to master. Understandably Anna has issues with her toss technique. Additionally, she struggles to get rid of serving with a forehand grip.
Anna like many recreational players struggles with short balls. She learns how to play the short forehand including working on ball recognition, timing, positioning, and footwork.
The two-handed backhand is not as easy as it looks. Anna's two-hander had some problem areas that Nick diagnosed and corrected.
Anna sustained pain in her arm due to a string job that was too tight.