many thanks to Sally Sullivan Mueller for posting this message;

I just received a message from CK’s daughter that CK (Cyrilla Bonogofsky) passed away peacefully in her sleep. That was the extent of the message, so I will let you know when I know more or can get an obituary. She has struggled greatly since the loss of her husband last October from COVID, and has been in isolation with her son and daughter-in-law in Texas. Prayers for her family at this difficult time.