Been there, bought some pugarees from her, Carolyn Busch. Nice lady. Her shop is very very nice. Small and quaint.
Her straws are from Brent Black and Graham Thompson (Optimo). A few other suppliers.
She sells the standard Biltmore, etc. felt hats, and has started to sell a few Optimo's. She puts out a newsletter "The Panama Press" and she runs the Peninsula Panama Hat Society.
She let me take photos of her shop.