I kinda get the same vibe, not the evil villain psychopath stereotype, but a real psychopath, she has the tells of one.
One of my cousins was a diagnosed psychopath and I see some similarities in the way Vanessa acts and how he acted when he was alive, the way she speaks and treats others around her sure gave me the same vibe.
Most people are too attached to the stereotypical psychopath that's why they keep calling Bella a psycho, but she actually displays regret when she fucks over that woman in the restaurant, a real psychopath doesn't feel regret, they'd know they've done something wrong and would not be bothered by it, they might act as if they were shaken by their acts if it would benefit them in some way, but IMO she wouldn't need to do this for the MC, maybe it was meta writing to get us players to sympathize with her a little more, but now I'm entering a whole new level of speculation that really changes nothing.