“neither I nor my husband could understand what Mother was saying/talking about. She was confused - not unusual, rambling, not making any sense, and slurring words - all unusual to our almost-daily telephone conversations.”
It could be medication, it could be dehydration.
They will sometimes “monologue” where they just go off talking without a break.
Please tell my dear friend from Massanetta and Narz that I have very fond memories of the times we were blessed to share with one another.