Because the House of Wares is an open booth in the middle of the boardwalk, instead of being safely housed inside a building, Panada can sometimes be killed by a group of smugglers who may appear randomly on the boardwalk.
Only a single smuggler spawns directly in front of her shop. Her protectron is more adept at fighting than the typical model, having better accuracy and higher critical hit chance. This can easily be heard during a brief firefight, furthermore upon arrival the smuggler will be an ash pile nearly 100% of the time.
Her protectron may be killed without her turning hostile, it will respawn each time the smuggler does making it an excellent source of unlimited scrap metal.
The protectron wandering about has the same paint job as the Nuka-Cola protectrons, albeit without the Nuka-Cola logo.
You can also kill Panada and her Protectron yourself, and steal her key taking the things he has for sale. No Negative Karma will be received upon her death but you will receive negative Karma for stealing her items.