@Windyridge, love Mauve's story and avatar :)
Windyridge says:
Mauve is intelligent which makes her a curious sort and she would wonder about your laugh given that you use your sword for a living. She would have probably approached you when bored on the journey and come right out and asked you why you are the way you are, Fafnir.
I imagine Fafnir might respond
"What do you mean 'given I use your sword fer a living?' Don't ya know? When you sign up they hand you a shiny sword, a hard shield, and then shove a ripe sense of humour right up yer arse. Some people shit it right back out, but they don't last long. Us who learn to laugh even at the worst times - especially at the worst times - we're the ones that last in this line of work."
(Hope it's not too vulgar! I'm happy to tone it down if folks are put off)
Windyridge says:
She might also rib a tough guy such as yourself about getting seasick but also wonder if you carried anything worth stealing. She is always looking for opportunities.
"Aye, yer not wrong. Who ever heard of a Northman who can't sail? No wonder they kicked me out, eh?"
Windyridge says:
She would view the rest of you in the same way as potential opportunities since it's in her DNA but she's not all bad and knows the value of a good friend.
It's possible she saw a his vial tucked away and nabbed it while he was puking over the side of the ship to see what kind of shiny things a Northman might carry. She'd surprise him that she could pull something like that off, but he might surprise her that he noticed the vial was missing almost right away, and an exchange of respect might follow. Fafnir wouldn't have any hard feelings, and might even reveal the true story about how he's been banished because of the demon, and what the vial contains.