Wait......this was a woman who was supposedly close do you for 20 years, then she sends leftover soup for you?
I'd send her back a note stating to pack herself a shit sandwich next time, not to contact you again until she can act like a normal human being. I would have donated the soup to a soup kitchen. Would have made me feel better.
You've gotten away from these toxic people, now get the message out that you mean to stay away. That's what I did with my toxic in-laws, life is now better than ever.