Whenever SNL producers book a host who seems inexperienced in live comedy, they fall back on a kind of playbook. Stick to popular recurring bits and pretaped videos to take the burden off the host. Give her small, easy stuff that plays to her strengths, then get her out of there. If she can sing, let her sing. The goal is to Bodyguard-cradle the host, letting her enjoy herself while hiding her from the real dangers of the scary sketch comedy world.
Given how little we saw of Anna Kendrick this episode, you'd think Lorne was standing nearby off stage, ready to dive in and take a bullet.