The letter 'was couched in' polite terms.
a psychiatrist's 'couch'
(..) you might wanna stay home tonight We turn to everybody's favorite morning weather guy, Charles. Where the hell are they? - Jonathan? - Check the couch! Ugh, I did. Oh... Got them. Okay, sweetie, I will see you tonight. - Yeah, see you later. - Where's Will? (..)2016 TvShow: Stranger Things Title: Chapter One: The Vanishing of Will Byers Season: 1 Episode 1