TV Guide has it listed that an episode named "Rose's Mother" will air.

I thought there wasn't an episode named that? Does anyone know?

I just checked TV Tome and there is no episode named "Rose's Mother". The only
episode about Rose's mother is named "Blanche and the Younger Man". Rose's mother comes for a visit and Blanche is involved or wants to be involved with a
younger man named Dirk.

I think Janette Nolan played Rose's mother. I saw her the other day on Gunsmoke playing Dirty Sally Fergus a old toothless woman. Great actress.