You tell Gerwalta that maybe you have been following her.

Gerwalta: "What, are you leaving already?"

Moonflower: "Nuh uh, we just got here!"

Gerwalta: "Then what's your deal?"

Stallion: "Ah, travellers, aye? Thought yer getup would get ye sunk like an anchor. Well, if ye got the coins, don't cut and run just yet; Amblerta's the biggest merchants' town on the coast, she is!"