1. She's a Shadow Druid. She even has Faldorn's writings, a Shadow Druid from BG1, in her chest in the library. Shadow Druids are very much "screw literally all people" militant druids that legitimately will murder entire villages just to preserve what they see as the balance. Slaughtering innocent refugees in order to be able to focus on nature is LITERALLY Faldorn's Shadow Druid sect territory. It's her bread and butter.
2. "Druids can create goodberries with a lvl1 spell so the food situation makes no sense" is poorly thought out criticism. How many spell slots must they expend every day? Why? Spell slots are a resource the druid need to do things like communicate with animals and carry out their duties. Kahga knows this.