To create a simple sentence with an interrupting appositive phrase from your passage, we can modify one of the existing sentences. Here's a sentence transformed into a simple structure with an appositive phrase:
Original sentence: "My cousin turns to look at me, and I look at her."
Revised sentence: "My cousin, a fellow adventurer, turns to look at me, and I look at her."
In this revision, "a fellow adventurer" serves as an appositive phrase that provides more information about “my cousin.” The overall structure remains straightforward while enhancing the sentence with additional detail.