Well, I think it didn't happen off screen. I guess we are at an impasse. Do you have proof it happened off screen?
We probably are. Again I came to thread in state of confusion - "why has this thread gotten so long"
She's not threatened by the twins or Halsin. Others have mentioned Minthara but I've never had her in the party.
I guess it's my reading as someone who is poly. If a partner takes an interest in someone who is strictly monogamous that is a threat to the relationship. Halsin - who doesn't really do 'relationships' - isn't a threat. Neither are sex workers.
So the pattern seems pretty clear to me - no to sharing with people who don't like to share, yes to sharing with people who like to share. It makes much more sense than reading monogamy backwards into the previous conversations.