Query on Annie Florence CLARK

Annie Florence Butler, {Australian Immigrant} is on Geni with

• birth 1836 England
• death 1959 Australia
• father Thomas Vickery, Convict "Somersetshire" 1814
• mother Elizabeth (Best) Vickery, Convict "Mary Ann" 1823

Thomas arrived in Australia in 1814 and Elizabeth arrived in Australia in 1823 and both remained in Australia til they died
Annie was born in England in 1836 so can not be their daughter
Annie died aged 123 - which is very unlikely

What is the source for her being their child or for her death date?