Which is a compound sentence?

 - The package includes some old letters from my grandma to my dad and a broken pocket watch.
 - Before the performance, Vicky tied a satin sash around her waist, and Nicole braided her hair.
The second sentence is the compound sentence. It is made up of two independent clauses joined by the coordinating conjunction and.
Before the performance, Vicky tied a satin sash around her waist, and Nicole braided her hair.