Sterling's Turkish Adventure is automatic and is part of the main story.
The Dream of Sterling and Sterling friendship guide/what you would see if you were not on Sterling's route guide guide for this caper are on the Sterling: The Main Adventure, and the Sterling friendship/what you would see if you were not on Sterling's route guide is on the The Main Adventure page.
Please Note: This caper is still technically considered a Sterling caper though it is part of the main story. The wiki chose to put it on the main adventure page and Sterling's main adventure page to simplify things for players.
Sadie can't actually select (nor avoid) this caper; it just automatically happens regardless of what route she is on. If she is on the Dream of Sterling path, the options will change from giving Relationship points to Dream points; there are also noticeable dialogue changes.
- REDIRECT Sterling: The Main Adventure