Villains Are Destined to Die, Vol. 4 by Gwon Gyeoeul
The plot thickens! Spoilers for the first three.
As in, since the last ends with a cliff-hanger, this opens with her having to fight the attack. And then help the Marquis after a discovery about it.
She attends a tea party, learns of the malicious intent in inviting her, and must deal.
With the hunting tourney itself, events accelerate. It involves ribbons, a waterfall, discoveries, attacks, and much more in way of complications. Also ends on a cliff-hanger.