Helsin sucks it is known (fight me fanboys!!!). The worst first druid ever. But it's not the first case of a druid grove going rogue. Not even the first case of druid grove going rogue in Baldur's Gate games.

Larian's Biggest Oversight, what to do about it, and My personal review of BG3 EA
"74.85% of you stood with the Tieflings, and 25.15% of you sided with Minthara. Good outweighs evil, it seems."