I believe this was the 'I Love Lucy' character, Marion Strong. She was so great at her craft.
I hated her character; all so crass & haughty! She fit in the many calamities in which Lucy & Ethel would be found. A great actress who played her (often miniscule) part to the hilt.
It's sad that she was the last of the cast of 'I Love Lucy' - but, they're all performing comedy in Heaven, and the Angels are laughing!