I mean, she knew to use sausage and beer on the border guards, but then she tried to give gold to the guys that probably mine the raw materials for the whole region's coin supply on their days off from guard duty? really? that's just stupid, sex appeal might work (in the event these dwarves are into that, which I have to assume is possible...Tolkien taught me that much) and of course the already proven food and booze option would probably work again, but why would they sell out for a few coins in an area where they can literally stumble into a fortune just by digging a big enough hole?