I noticed that instead of writing out "exercise" your therapist used the abbreviation "ex's". It took me a minute to catch this, but it was pretty easy to figure out when I saw it used in phrases such as "strength ex's", "coordination ex's" and "home ex's program".
However, there was one part of your note where it gave me pause.
In the "treatment plan" it said "She'll be building up her arm strength using her ex's balls."
I hope (for her ex's sake) you still meant "exercise"...