I wouldn't call Lara Raith exactly a villain... She is more of a predator than a villain in my opinion..
As I noted once a long time ago, we should ask Anna Ashe for her analysis of Lara's nature...but we can't.
Even her predatory nature only goes so far. From the POV of a rabbit, a wolf is a villain. It doesn't make much difference from the rabbit's POV if the wolf is not 'evil' in the larger scheme of things, any more than it matter from the wolf's POV that the bear that stole its kill is not 'evil'. It's still a threat to be dealt with, it's an enemy because of what it is. The prey isn't safe until the predator is neutralized.
Lara arranged for the deaths of Anna Ashe and the other minor practitioners (albeit indirectly) not out of hunger, but because it made sense as a move in the Game.