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).
This protects Panam’s plan to steal the Basilisk and keeps you in her good graces. Instead of replying via text, you can physically
The text typically arrives shortly after you reach the locomotive control tower. This protects Panam’s plan to steal the Basilisk
If you are referring to the quest "With a Little Help From My Friends," Saul Bright will text you asking for Panam’s location. "I'm not her keeper" is also a choice,
"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)
The best way to respond depends on your goals for the story: Response: "No idea."
If you cannot trigger the text options, ensure that Mitch has successfully entered his truck during the "With a Little Help From My Friends" mission before you get into Panam’s truck.