Rachel Leviss found it “hard” to watch the last season of ‘Vanderpump Rules’. The 29-year-old beauty quit the reality TV show following her affair with Tom Sandoval, and Rachel struggled to hear her former co-stars talking about her on the last season. Asked if she would ever return to ‘Vanderpump Rules’, Rachel told Us Weekly: “It would take all-expenses paid therapy. I would need a therapist on call and therapy sessions after every single filming session! “I just don’t know if I see a path forward because it’s not a healthy dynamic. I’m trying to protect my mental health and I’m trying to li…