Dia isn't actually sure what she's mentally labeled as the "avaricious-commoner" faction is really a faction, with like, leadership and advanced planning, or any planning, as opposed to an emergent outcome of all of the commoners realizing they can obtain perks and benefits for themselves through a vote and one commoner with no shame leading the charge. But if they did have leader, that leader would be Dolca the Slattern, maybe with Jordi Mont as her second in command or as the true mastermind. Regardless, talking to Dolca seems like a good move.
As Dolca has a less reputable profession and a more controversial reputation, Dia will take the lead on talking to her, to reduce the reputational hit to Thea should anyone note the conversation. So when the convention finally breaks for a late lunch after a drawn out morning session Dia approaches Dolca.
"Can we talk privately?"