Bonny is actually in the crafting hall across the street from the dot on the map. The door to the crafting hall is located at 30.5S, 51.0W.
Furthermore, the list of items she sells is incorrect here, unless some of these items are only sold occasionally. When I encountered her, she did not sell:
Bronze Cooking Supplies
Bronze Farming Tools
Common Mushrooms
Fresh Carrot
However, she DOES sell:
Farming Tools
Forester's Axe
Jeweller's Tools
Mining Pick
Pork Shank
Scholar's Glass
Smithing Hammer
Tailor's Tools
Woodworking Tools