Jabes.plays.RPG says:
Well, that nat 20 feels good after Jarveena's last miss! She's totally zeroing in on the trog that's got Leatha's rapier.
Oh man that was a sweet crit. I'm going to call that your 2nd round attack, and your miss your 1st round attack. Good news though: crits let you get to roll your Sneak Dice again too, so it would actually be 2d6 - all damage dice!
(I'll update this post if for some reason you don't get Sneak Damage conditions by 2nd round) (see below edit). If other conditions change by round two (and they are going to) and you want to switch your target, you can repost and recon that action but keep the rolls.
EDIT: Rapier Trog hid successfully, so if you want to make use of that crit, then pick a different target for this round, Jabes :)
PS: I am terrified of when Jarveena gets multi-attack or cunning action, either one of which could happen next level!