Whit Stillman is interviewed in both of these youtube videos. One for a podcast for JasonCritic & another for HeyUGuys.
Both interviews shed light on the making of the film and also reveal the choice of costumes. I’ve heard some complain about the costumes not being Jane Austen enough, but if they knew the period of the film (1790s), they would know that the costume choices are accurate for the time.
As you know, Love in Friendship is in theaters almost everywhere, so check your local listings.