It sounds like you might be referring to , a mod for Fallout 4 that introduces a fully voiced companion named Claire, along with a new questline, custom weapons, and mature themes. If you’re looking for an interesting feature of that mod (specifically version 1.P Mature ), here’s one standout element: Dynamic Morality-Based Dialogue & Consequences In the Mature version, Claire reacts not just to your actions, but to how you speak to her and other NPCs during intimate or high-tension scenes. Depending on your choices, she can become more trusting and vulnerable — or hostile and sarcastic — affecting later quest outcomes and even unlocking an alternate “dark path” ending where she betrays you if pushed too far. This goes beyond simple affinity thresholds, using a hidden “respect vs. fear” tracker.