Say, Milbunk, what would Downy think of if a merchant with incredible, magically potent goods were to appear in front of his fortress and offer him stat-boosting items, rare weapons, magical tomes, defensive wall-creating runes and explosives in bottles, and generally anything he'd need to power up his troops all at low, low prices?
And offer to set up shop in his hideout where he can keep an eye on her, just to ensure that all her goods are only for his purchase?
Being good to clients you know need your wares is an excellent business strategy, after all.
Basically, if you're familiar with Fire Emblem, how would he react to an Anna going to him to sell her wares?