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Warning: You have low light vision - not darkvision
Snuffing out all light will leave you at the same penalty as your two attackers:

"In areas of darkness, creatures without darkvision are effectively blinded. In addition to the obvious effects, a blinded creature has a 50% miss chance in combat (all opponents have total concealment), loses any Dexterity bonus to AC, takes a –2 penalty to AC, and takes a –4 penalty on Perception checks that rely on sight and most Strength– and Dexterity-based skill checks. Areas of darkness include an unlit dungeon chamber, most caverns, and outside on a cloudy, moonless night."

In dim light your low light vision gives you an edge as you aren't hampered

Your riposte misses and Aretta will try to cut you:

(1d20)[2]+2 (1d4)[3]+1 damage
Miss Chance 1d10 (1d10)[5]
Depending on if you do kill the lights or not it's either 20% or 50% miss chance




The former whore is furious and tries to stab you in the ensuing darkness.