Forgive but this must have been said already. How is she inconsistent? She's happy to either be poly or mono.
You can hint at a poly relationship at the wine sharing moment. From memory
Tav: "not wanting to share with others?" Shadowheart: "Not right away"
Drow twins:
"I don't want our first time to be with others"
And the refusals make sense. "Wyll is a from a very traditional Baldurian family, I doubt they would be okay being introduced to their lover's lover"
"Something tells me that Lae'zel will not be willing to share"
She is willing to be a poly relationship with another poly person but the only other poly person Halsin so . . .
Don't talk to Halsin, don't hire the twins and it's not an issue
So you read the line where she justifies it to herself, then ignore the followup line where she speaks the truth? She doesn't want to be your spare lover. That's the reason. She wants you all to herself. She's very happy if you tell her you'll break up with Wyll. Same idea with Lae'zel and all other companions. It's all her trying to be kind, because she wants you all for herself.
Nothing, and I repeat nothing, changes regarding Halsin.
