Of course not. She, as everybody who owns a business, want to sell as much as possible.
But the amount of time and effort she puts in to it is ubelivable.
Amongst other things she handles bookings for people who are coming, free of charge. If you call the local tourist council (who's Dufftown-office normally is closed during the festival) the closest place to spend the night offered will most likely be Elgin.
And of course she just loves plugging her favourite whiskies - I think it's reasonable to think that her shop is the shop in the world that sells the most Mortlach 16yo.