Jean, I have never read Enchanted April either, but it sounds like one I'd enjoy. The film also, if I can find one with captions or subtitles. I think the film you were wondering about might be My OLd Lady, starring Maggie Smith and Kevin Kline. Kline inherits a Paris apartment from his deceased father, but when he goes to retrieve it, he finds his father's former lover living there. The film came out last year, and is based on a play by Israel Horowitz. I haven't seen it, but it's offered by Amazon Prime, so maybe someday.
I first heard of Elizabeth von Armin when we read The Guernsey Literary and Potato Peel Society a few years ago. She was the author of Elizabeth and her German Garden (c1898), used by the Guernsey group to explain to the Germans why they were out and about.