talk through

verb2

1. •
   To tell (someone) step by step how to do something.

   • The dispatcher will have to talk him through landing the plane in the middle of a hurricane!
2. •
   To comfort someone as they endure trauma; to help someone consider an issue or see certain aspects of it.

   • I'll talk him through the problem.
   • She's utterly grief-stricken, so I'm going over to talk her through it.