Thanks Roo – I agree that the deceased owner can’t sign anything 
Seriously though, if I was sure of my ground I wouldn’t be seeking comments, but maybe I should approach this from a different angle.
My take is that the trustee of the estate (probably a lawyer) can’t vote, my problematic future owner can’t vote if she’s still a beneficiary of the estate, and IF probate has been granted, as a new owner she can’t vote unless the Owners Corporation receives a Notice under S118 of the NSW Strata Schemes Management Act (1996) prior to the commencement of the General Meeting
As I said that’s my “take”, but what do you all think?