His assistant, attorney Twyla Sketchley, sat behind his shoulder and silently mouthed, He is a saint.
Twyla Skwtchly sat being him and mouthed "he's a saint". 
mnli hypothesis: Twyla Skwtchly sat being him and mouthed "he's a saint".  premise: His assistant, attorney Twyla Sketchley, sat behind his shoulder and silently mouthed, He is a saint.