Zephyri sees Haram's quick signal from the window, much earlier than expected... Not good, it's barely even been 5 minutes. Damage control! The fey quickly dons the glamer of a dark-haired human courtier, shifting her clothing to match, and dashes through the Tavern doors before their prey can leave.

Haram's simple signal gave Zeph no expectation when she burst through the door, but she was still taken aback by Derek's chosen target, seeing Vibax underneath the massive man's swaying arm. How did they get him this drunk already? Zeph relaxed, seeing that her companions simply sprinted the job, with only minor course corrections. I can work with this...

Standing by the doorway, Zeph draws her polearm dramatically, pointing it at Derek just within reach. "Oy, you lout! LET GO OF MY MAN." Zeph needed to fake none of the murderous intent in her voice. This man would die here, today.
Spoiler: OoC
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Responding to Haram's signal in OoC, before they manage to leave the establishment. Lets trap him in here!

Intimidate, Taking 10 to Demoralize Derek in 10' with Zephyri's Glaive: 26

Plan: (Copying from OoC)
Blocking the door, 10' radius 'Zone of Control' with her Glaive + Unarmed attacks

If he moves, AoOs to Trip + follow-up:

Immediate: Invisibility, for 1 Round (Cooldown, 3 Rounds)

With Glaive:
Touch attack: 26 vs flat-footed AC (invis)
Trip attempt: 37

Touch attack: 22 vs flat-footed AC (invis)
Trip attempt: 37

Unarmed:
Touch attack: 13 vs flat-footed AC (invis)
Trip attempt: 25

Touch attack: 22 vs flat-footed AC (invis)
Trip attempt: 22

Touch attack: 17 vs flat-footed AC (invis)
Trip attempt: 20

and, follow-up attack if he gets tripped:

With Glaive:
Attack: 16 vs Prone, flat-footed AC (invis)
Confirm: 21
Damage: 10 +1 Fire

Unarmed:
Attack: 27 vs Prone, flat-footed AC (invis)
Confirm: 22
Damage: 9 +1 Fire

Current Condition:
Disguise Self, 50 min
Concealment (20%) via Child of Shadow
Invisible, 1 Round (if AoO triggered)
+2 Intimidate, -4 Bluff/Diplomacy (Vodare, (1d4)[3] hours)