If they do implement it the easiest solution is to just do the Thaniel stuff before rescuing her. The ultimatum dialogue that was found even accounts for the possibility of you doing that.
True, but what I'm worried about is a scenario where you enter from the Mountain Pass and follow the drider, end up in Moonrise Towers at the start of the act, recruit Minthara and then have Halsin going nuts about it and demanding you pick one of them. You'd have to purposefully avoid Minthara to be able to lift the curse. It wouldn't be very immersive finding her while she's being judged, then going to her cell and telling her 'Sorry girl, there's this little thing I have to take care of with Halsin first, you just stay here and suffer for a bit longer. Don't worry, I'll come back for you later, I promise!'
