As I just posted in the other thread:
I bit the bullet and bought the death cert for Harriet.
Name of parents: Harriet HURREY, formerly CLARKE and Unknown.

I was hoping for a mis-transcription but no. I guess Harriet was 93 and had just died from senile decay and heart failure. But that's just plain sloppy work, either from great great grandpa Alfred or the registrar.
It states that she was born in Lincolnshire and had been in Victoria 70 years.