I agree with your sentiments that it would be nice to be able to interact with Minthara while playing a neutral or good stance as far as the grove is concerned. But I have experienced on one of my current playthroughs with the conflict with Lae'zel and Shadowhart
They fought to the death and I had to side with one of them, and I had no clue of the trigger that caused it until it happened at camp unexpectedly. This caused me to loose one of them on this playthrough.
. So it might prove difficult to manage such an extreme difference of opinions in code.