Don't write stage directions. If it is not apparent what the character is trying to accomplish by saying the line, tell us how the character said it or whether or not she moved to the couch isn't going to aid the case.
Characters on stage, like people in what we refer to as "real life," do not speak to reveal themselves. They do not speak to conceal themselves. They speak to get whatever it is that they want. It is the only reason they speak.
There is no such thing as character other than the habitual action, as Mr. Aristotle told us two thousand years ago.
Any time two characters are talking about a third, the scene is a crock of s***.
IF YOU PRETEND THE CHARACTERS CANT SPEAK, AND WRITE A SILENT MOVIE, YOU WILL BE WRITING GREAT DRAMA.
Consider: for all the gobbledegook [film studio] executives spout about backstory, all that we, the audience, want to know is what happens next. That's the only thing that's going on. . . . Character is nothing other than action, and character-driven means The plot stinks, and you'd better hope the star is popular enough to open the movie in spite of it.