Audiobook & fiction narration
A narrator plus a character, with the emotion carried by the character's lines.
Hank: The letter had been under the door all night. She read it twice before she let herself breathe.
Arabella: [whispers] He knew. [pause] All this time, he knew.
Hank: [slowly] Outside, the rain had finally stopped.
Keep the narrator mostly untagged so the tagged lines stand out. One [pause] inside a line does more than several in a row, and [slowly] on the closing line gives the scene an ending.