1. Neither.
2. Renko, in the Holding Shed Row. You get a Tiny Orb of Mist, which is an item enhancement.
3. You never find out. If you complete both of her quests, she'll blame you for what happened in her experiment.
4. If you're looking to maximize experience, yes.
5. Komoa is more of a rebel.
6. Gull North Docks, if you give her the papers.
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