Hello Fire Knight ( I can't believe I'm running into you here!)! I know the friend of which you speak because I just wrote about our trip to Case Vecchie together -- which by now I'm sure you've seen on www.southofrome.com!
In any case, I'm so happy to report, we were not her last guests and she and her daughter have relaunched their program and website (www.annatascalanza.com). We did a one day class and had an amazing time. I hope you go and enjoy!
One of my best friends attended Anna's class about 18 months ago and loved it. I think she told me that her class was the last one Anna was going to be doing so you may want to verify that with the estate. If that doesn't work out you may want to look at Giovanna Tornabene's school in Gangi as an alternate. I've lived on the island for close to 28 yrs so if you have any questions regarding eastern Sicily or the south please let me know, I may be able to help.