Saul -

This protects Panam’s plan to steal the Basilisk and keeps you in her good graces.

The best way to respond depends on your goals for the story: Response: "No idea." This protects Panam’s plan to steal the Basilisk

This permanently kills the romance with Panam and locks out the Aldecaldo ending for the game. Troubleshooting Tips Rewards: A free Mizutani Shion "Coyote" (red variant)

Instead of replying via text, you can physically go back to Saul at the Nomad camp and tell him about Panam's plan. Rewards: A free Mizutani Shion "Coyote" (red variant). A large sum of Eddies (€$27,000). "I'm not her keeper" is also a choice,

The text typically arrives shortly after you reach the locomotive control tower.

"I'm not her keeper" is also a choice, though some guides suggest it may be less effective for the romance path. To Betray Panam (The "Snitch" Route)