In my opinion Minthara should be a special exception and knocking her out should continue her story. She is an actual companion after all and I personally do not really believe that locking her to the inferior path is justified.
It would be a lot better if they just forsake the exclusivity of good/evil paths and have them act as intricate nuances, allowing Minthara and Halsin to have the same type of rivalry and mistrust that Shadowheart and Lae'zel initially do.
