Virginia and I had been in 'real life' contact with Lydia, and exchanged Christmas and Birthday cards with her. We knew she had finally 'completely' retired at the age of 90 and was enjoying life and her 'golden years' with her loving partner, Paula, who knew about and loved Lydia. Although we had not talked with Lydia in a while, we were not overly concerned when she had not responded to an email. We kept saying that we were going to call her, and then life and family issues got in our way.
Well, this morning I had the spare time and I searched for - and, sadly, found - an obituary for her and learned that she passed away on April 28, 2017. Although s/he and his wife had no children (the wife predeceased Lydia after nearly 50 years of marriage), they were both very accomplished researchers and will forever be remembered in the professional world. Lydia's vast knowledge, wisdom, humor and friendship will forever be missed by the many friends and colleagues who knew her.
RIP, Lydia, and may you and your wife be forever swimming with your beloved dolphins.
- SL and Virginia
Proud Military Family - Navy, Army, Coast Guard, National Guard 
I am sadden at her passing. She was great to chat with. That explains why she was no longer coming here.