She complained about her whole arm.
So I questioned here more.
"When do you feel this tension most?"
I discovered it had to do when fingering her flute at certain pitches. I thought, hmmm. Funny she mentioned fingering. I asked:
"So how about your fingers? Are they OK?"
"No!" she replied, "This one always hurts." And she held up one of her pinkies.
Luckily there was another flautist in the group so I asked her:
"Hey - do you have problems with this finger too?"
What do I know about playing the flute?