Sarah Hickey search

I am seeking any information on my great grandmother Sarah Hickey who was born in about 1832 in Nenagh and who worked as a kitchen maid before departing Ireland 1848 or 1849 as an "Irish famine orphan" as part of the Earl Grey Scheme for resettlement in Australia. She was Roman Catholic and departed from the workhouse in Tipperary town. She sailed from Ireland on the Pemberton out of Plymouth, arriving in Melbourne, Australia on May 26, 1849. She was married twice in Australia. She first married Scottish-born James Hamilton and then later, in 1864, she married English-born William Godbold in Victoria in 1864. She died of rheumatic fever on the Victorian goldfields at Smythesdale, Victoria on December 26 1874. Her parents names are given as John Bennett and Mary Ann Gleeson. Our family would love to discover some more information on what her situation might have been in Nenagh or Tipperary town before leaving for Australia, or indeed any other information surrounding her life. One of her children, Almeda Godbold, was my grandmother.