Thanks China.
None of her children died until they were over 60. The first child death we've found in this line was years after she had passed away.
One of her daughters actually moved into a house with her brother in Victoria, and she was the same daughter that was listed as the informant for her mother's death.
Her death was listed as Senile Decay, so our natural assumption was that, after her husband died, the spinster daughter stayed behind. or went back eventually, to look after her mother until she passed away.
She apparently never left Tasmania, so that leads us back to a family gathering. The other photo shows her wearing the same bonnet, what looks like a long cape, and possibly dark gloves. (The photo, at the following site, isn't in the best condition, and the area of the fingers could just be too darkened)
http://member.melbpc.org.au/~albonser/christies.htmlVictoria