updated 03/01/2013 AT 5:30 PM ET
•originally published 03/01/2013 AT 3:00 PM ET
Bonnie Franklin, who died of pancreatic cancer Friday, and Valerie Bertinelli go back nearly 40 years, to the sitcom One Day at a TIme, on which Franklin played her mother, Ann Romano.
Two years ago the actresses reunited professionally, on Bertinelii’s series Hot in Cleveland.
Bertinelli said in a statement Friday: “My heart is breaking. Bonnie has always been one of the most important women in my life and was a second mother to me.”
“The years on One Day at a Time were some of the happiest of my life, and along with Pat [Harrington Jr.] and Mackenzie [Phillips] we were a family in every way.
“She taught me how to navigate this business and life itself with grace and humor, and to always be true to yourself. I will miss her terribly.”