I certainly don't consider Wanda heroic. I think she should be in jail for what she did, actually. Ironically, the Hero of Westview is really Agatha. While she had unquestionably bad motivations and performed bad acts (and as such deserves to be punished), in the course of episodes 8 and 9 she broke through to Wanda and forced her to see the hell she was making for everyone else.
Relatedly, I was pretty pissed off by Rambeau's "they have no idea what you sacrificed for them" line. As if the townies should be grateful for what they were put through. Pffffft.