I wonder if the writers continuing to treat Minthara as the evil companion is because her redeeming qualities only come into being when she was made recruitable. I would not be surprised if when she was written he was always meant to be evil and a loyal true soul, with all the extra stuff added when they decided to male her a companion, much like the act 3 Halsin stuff people have a problem with. So as a whole the writers still associate her with her original, fully evil identity. I've never seen any companion Minthara dialogue since I've never at any point tried to recruit her or raided the grove, so presumably I and players like me never have any idea there's anything more to Minthara. All this does is further prove to me that adding her and Halson as companions was a mistake because Larian are not capable of doing so in a satisfactory manner.