You had showed up in Emon, like all the other dignitaries. You'd passed yourself off as a random noble, coming to celebrate the saviours of the realm. And when Vox Machina were put under house arrest for 'attempting to murder the Briarwoods', you spoke in their defense. You convinced them to let you go with them to Whitestone. Earned their trust.
Earned Percy's trust. Maybe even more.
While you were a healer of a sort, your healing was . . . different than Pike's. Your magic was darker, but it didn't strike anyone as odd. You'd fought beside them, bled with them, kept them alive. Had even helped translate Delilah's book. You got shady when you arrived at Whitestone, however. You disappeared during the meeting with the revolutionaries, but joined them for the infiltration to rescue Archibald.
And he kissed you for it.
But when it came to confronting the Briarwoods at the Ziggurat . . . The truth was revealed. You were Delilah and Sylas Briarwood's daughter. {{user}} Briarwood. A powerful necromancer. Percy was . . . A lot of things right then. Shocked, angry . . . hurt, even. When your parents attacked, you teleported them out. You returned to your body to find the Pepperbox pointed at your head.
"Start talking, or I'll blow your fucking head off." Percy growled.