I remember reading the play in middle school (it was in a collection with Our Town and The Matchmaker--not assigned reading, but I loved reading plays) and being both mystified and enchanted by it. The only full-length production I've seen was an Ithaca High School production done close to thirty years ago--one of my colleague's daughter played Mrs. Antrobus (she went on to study with Kristin Linklater and is now a tenured associate professor of acting at U of Denver)--even with students, it had wit and emotion.
And the best Sabina I've ever seen was my late and dear classmate Howard Rittenberg, who did the opening scene--feather-duster and all--in my sophomore Interpretation of Drama class taught by Lilla Heston. He did it in a dank classroom in Fisk Hall on a typically bleak Evanston December morning at 9 a.m. That ws 1976--and I still remember it in detail!