Her brother is quite the character, too!

"I think this book is based loosely on... — The Ice..." Q&A

https://www.goodreads.com/questions/225025-i-think-this-book-is-based-loosely-on

"We All Scream for Lillian Dunkle!" | Chicago Public Library

https://www.chipublib.org/blogs/post/we-all-scream-for-lillian-dunkle/

"An icy ice cream queen" - The Dayton Jewish Observer

https://daytonjewishobserver.org/2015/09/an-icy-ice-cream-queen/