| Tialan |
Personally, I appreciate the "lack of ambition." Gets a bit boring when every villain has to be some sort of megalomaniac. And it strikes me that between the overly zealous druids and the fact that you can't spoil a massive tract of wilderness without affecting your neighbors (whether intentionally or not), I think there's enough to attract PCs' attention.
The "lack of ambition" is really good for getting the PCs to be proactive, too. Rather than sitting around waiting for the villain to make her move and plans apparent, they have to venture forth into her domain and take her down. Combine that with the fact she likes hunting down interlopers herself, and you get a pretty fun "Who hunts the hunted?" situation.
Though I think it would be a good idea to give her latent motivation to actively harass those outside her domain (such as some precious object that could get stolen so she has to send her druids out to scour the neighboring countryside, or something similar).